body {
      margin: 0;
      font-family: "Segoe UI", SegoeUI, "Helvetica Neue", Helvetica, Arial, sans-serif;
          /*background: #f5f5f5;*/
    }
    .class_sec span
    {
        color:red;padding:0 10px;
    }
    hr
    {
        margin:25px 0;
    }
    .margin_prop
    {
        margin:20px 0;
    }
    .solutions 
{
    display: none;
    background: #f3f3f3;
        text-align: justify;
        padding: 20px;
        border-radius: 0 10px 10px 10px;
        font-size: 18px;
}
        #submit-button:disabled {
            background-color: #ccc;
        }

    /*---------tab end-----*/
.navbar 
{
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: white;
    color: black;
    padding: 1em 2em;
    position: fixed;
    width: 100%;
    z-index: 1;
    box-sizing: border-box;
    border-bottom: 1px solid #ccc;
    top: 0;
}
.centered-heading
{
    text-align: center;
    margin-bottom: 40px;
    margin-top: 100px;
}
.centered-div 
{
    text-align: center;
    background-color: rgba(0, 0, 0, 0.05); /* Very light black */
    margin: 20px auto;
    padding: 20px;
    border-radius: 10px;
    width: 50%;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.centered-div h3 
{
    font-size: 1.5em;
    color: #333; /* Dark gray */
    margin-bottom: 10px;
}
.centered-div a 
{
    display: block;
    font-size: 1.2em;
    color: black; /* Blue */
    /* color: #007BFF; Blue */
    text-decoration: none;
    margin: 5px 0;
}
.centered-div a:hover 
{
  /*text-decoration: underline;*/
    text-decoration: none;
    color: #0056b3; /* Darker blue */
}


.logo 
{
    font-size: 1.5em;
    color: black;

}
.logo a 
{
    color: black;
    text-decoration:none;
}
.nav-links 
{
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}
.nav-links li 
{
    margin: 0 1em;
    /*width: 50px;*/
}
.nav-links a 
{
    text-decoration: none;
    color: black;
    transition: color 0.3s;
}
.nav-links a:hover 
{
    color: #00aaff;
}
.right-section 
{
    display: flex;
    align-items: center;
}

.search-bar 
{
    margin-right: 1em;
    display: flex;
    align-items: center;
}
.search-bar input 
{
    padding: 0.5em;
    border: 1px solid #ccc;
    border-radius: 4px;
    outline: none;
}
.notification 
{
    margin-right: 1em;
    font-size: 1.2em;
    cursor: pointer;
}
.login-btn 
{
    padding: 0.5em 1em;
    background-color: #007bff;
    color: white !important;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
}
.login-btn:hover
{
    background-color: #0056b3;
}
.menu-toggle 
{
    display: none;
    background: none;
    border: none;
    color: #c5c5c5;
    font-size: 1.1em;
    cursor: pointer;
}
.welcome-section 
{
    text-align: center;
    padding: 2em 0;
    color: black;
    background-color: #f9f9f9;
    padding-top: 120px;
    
        background-image: url('../images/welcome1.jpg'); /* Replace with your image URL */
    background-size: cover; /* Ensures the image covers the entire area */
    background-repeat: no-repeat; /* Prevents repeating of the image */
    background-attachment: fixed; /* Fixes the image in place */
    background-position: center; /* Centers the image */
    height: 220px;  /*Full viewport height */
    /*display: flex;
    justify-content: center;
    align-items: center;*/
    color: white;/*
    text-shadow: 0 2px 5px rgba(0, 0, 0, 0.7);*/
    
}
.welcome-section p 
{
    font-size: 1.3em;
    margin: 1em 0;
    line-height: 50px;
}

.welcome-section hr 
{
    margin: 2em auto;
    border: none;
    border-top: 1px solid #ccc;
    width: 50%;
}

.padding_props
{
    padding:20px;
}
.pracp
{
    float:left;
    width:100%;
    padding-top:20px;
}
#myDiv
{
    padding:0 20px 20px 20px;
}
.refreshbtn
{
    width:100%;
}
.history_btn
{
    float: right;

}
.hdiv
{
    width: 100%;
    float: left;
    border-bottom:1px solid #c5c5c5;
}
.solution_btn
{
    background: #0066cc;
    color: white;
    border: 0px;
    padding: 10px 18px;
    font-size: 15px;
    margin: 15px 0 0px 0;    
}

p, h1,h2,h3,h4,h5,h6
{
 /* text-align:justify;*/
    margin: 0;
    line-height: 1.7;
}


    
    
/*----------------------------------------------------------------------------*/

@media (min-width: 769px) 
{
    .sol_btn
    {
        background: #0066cc;
        color: white;
        border: 0px;
        padding: 10px 18px;
        font-size: 15px;
        margin: 0px 0 0px 0;
    }
    .subject_names
    {
       line-height: 1.5;
       /*font-size: 0.95em !important;*/
        padding: 0 3px !important;
        display: block !important;
        font-size: 1.2em;
        color: black;
        /* color: #007bff; */
        text-decoration: none;
        margin: 0.5em 0;
        transition: color 0.3s;
    }
    .sec_div
    {
        width: 100%;
        float: left;
        /* height: 390px; */
        padding-bottom: 30px;
        margin-bottom: 30px;
        border-bottom: 1px solid #c5c5c5;
    }
    .class_sec
    {
        width: 21%;
        float: left;
        padding-right: 4%;
    }
    .subject-section 
    {
            margin: 0 10% 0 10%;
            padding-top: 2em;
            color: black;
            /* background-color: #f0f0f0; */
            width: 71%;
            /* border-radius: 8px; */
            float: left;
            /* border-right: 1px solid #c5c5c5; */
            /* border-left: 1px solid #c5c5c5; */
            text-align: left;
            padding-bottom: 4em;
            padding-left: 5%;
            padding-right: 5%;
    }

    .subject-section h2 
    {
        font-size: 2.5em;
        margin-bottom: 1em;
        border-bottom: 1px solid #c5c5c5;
    }
    
    .subject-section a 
    {
        display: block;
        /*font-size: 1.2em;*/
        color: black;
        /* color: #007bff; */
        text-decoration: none;
        margin: 0.5em 0;
        transition: color 0.3s;
    }
    
    .subject-section a:hover 
    {
        color: #0056b3;
    }
    /*---------------------sports menu----------------------------------------*/
    .sports_sub
    {
        width: 50%;
        float: left;
    }
    .sports_sub ul
    {
        list-style:none;
        padding:0px;
    }
    .sports_sub li
    {
        list-style:none;
        padding:0px;
    }
    .sports_sub p
    {
        font-size:1.2em;
    }    
    /*---------------------end sports menu----------------------------------------*/
    .menu-overlay_bottom_menu
    {
        display:none;
    }
    .trythese
    {
        font-size:18px;
    }
    /*-----------------------solution tab ------------------------------------*/
    .trysolution1 
{
    display: none;
    background: #f3f3f3;
    padding: 20px;
    text-align:justify;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}		
.trysolution2 
{
    display: none;
    background: #f3f3f3;
    padding: 20px;
    text-align:justify;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;    
}
.trysolution3 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;      
    font-size: 18px;
}			
.trysolution4 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}				
.trysolution5 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;    
}		
.trysolution6 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}	
.trysolution7 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}
.trysolution8 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}
.trysolution9 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}
.trysolution10 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}        
.trysolution11 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}		
.trysolution12 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;    
}	
.trysolution13 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}
.trysolution14 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;    
}
.trysolution15 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}
.trysolution16 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    font-size: 18px;
}        
/*---------------------------------------------------------------*/
    .login_btn 
    {
        background: #0066cc;
        color: white;
        border: 0px;
        padding: 15px 40px;
        font-size: 1em;
        letter-spacing: 1px;
        margin: 20px 0 20px 0;
    }
/*--------------------login--------------*/
    .login_img_logo
    {
        display: block;
        width: 90%;
        margin: auto;
        /* padding: 6px 0px; */
        padding: 70px 0 55px 0;
    }
    .login_props
    {
        width:60%;
        margin:auto;
        display:block;
    }
    .login-container {
        background: #ffffff;
        padding: 2rem;
        border-radius: 10px;
        width: 50%;
        text-align: center;
        display: block;
        margin: auto;
        position: absolute;
        top: 0;
        /* border: 1px solid #c5c5c5; */
        left: 0;
        bottom: 0;
        height: 50%;
        right: 0;
        }

    .login-container h1 {
      margin-bottom: 1.5rem;
      font-size: 1.8rem;
      color: #333333;
    }

    .login-container input[type="text"] {
        width: 100%;
        padding: 10px;
        margin: 0.5rem 0;
        border: 1px solid #cccccc;
        border-radius: 5px;
        font-size: 1rem;
        background: #f9f9f9;
    }
    .login-container input[type="password"] {
        width: 100%;
        padding: 10px;
        margin: 0.5rem 0;
        border: 1px solid #cccccc;
        border-radius: 5px;
        font-size: 1rem;
        background: #f9f9f9;
    }
    .login-container input[type="email"] {
        width: 100%;
        padding: 10px;
        margin: 0.5rem 0;
        border: 1px solid #cccccc;
        border-radius: 5px;
        font-size: 1rem;
        background: #f9f9f9;
    }
    .registerbutton
    {
      width: 100%;
      padding: 10px;
      background: #4facfe;
      border: none;
      border-radius: 5px;
      color: white;
      font-size: 1rem;
      cursor: pointer;
      margin-top: 1rem;
        
    }
    .registerbutton:hover {
      background: #00a3cc;
    }
    .login-container button {
      width: 100%;
      padding: 10px;
      background: #4facfe;
      border: none;
      border-radius: 5px;
      color: white;
      font-size: 1rem;
      cursor: pointer;
      margin-top: 1rem;
    }

    .login-container button:hover {
      background: #00a3cc;
    }

    .login-container a {
        display: block;
        margin-top: 0.8rem;
        color: #2b363e;
        text-decoration: none;
        font-size: 1.1em;
    }

    .login-container a:hover {
      text-decoration: underline;
    }
/*--------------------login end--------------*/

    .footer 
    {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        background-color: #333;
        color: white;
        padding: 2em;
        bottom: 0;
        box-sizing: border-box;
        /*position: absolute;*/
        width: 100%;
    }
    /* Footer Styles */
    
    .footer .mission 
    {
        width: 38%;
    }
    
    .footer .nav-links-footer 
    {
        list-style: none;
        padding: 0;
        margin: 0;
        width: 20%;
    }
    
    .footer .nav-links-footer li 
    {
        margin: 0.5em 0;
    }
    
    .footer .nav-links-footer a 
    {
        color: white;
        text-decoration: none;
        transition: color 0.3s;
    }
    
    .footer .nav-links-footer a:hover 
    {
        color: #00aaff;
    }
    
    .footer .social-icons 
    {
        display: flex;
        align-items: center;
        width: 20%;
        justify-content: flex-end;
    }
    
    .footer .social-icons a 
    {
        margin-left: 1em;
    }
    
    .footer .social-icons img 
    {
        width: 30px;
        height: 30px;
        transition: opacity 0.3s;
    }
    
    .footer .social-icons img:hover 
    {
        opacity: 0.7;
    }
    .center-div 
    {
        text-align: center;
        margin: 7em auto;
        padding-top: 2em;
        color: black;
        background-color: #f0f0f0;
        width: 60%;
        border-radius: 8px;
        padding-bottom: 4em;
    }
    .image-container 
    {
        text-align: center;
        /* width: 100%; */
        padding: 50px;
    }
    .image-container img 
    {
        width: 55%;
        border: 2px solid #ddd;
        border-radius: 10px;
    }
    .image-container h3 
    {
        margin-top: 10px;
        font-size: 16px;
        color: #333;
    }
    .books_props
    {
        display: inline-block;
        width: 50%;
    }
    .books_props a
    {
        color:black;
        text-decoration:none;
    }    
    .welcome-section h1
    {
        font-weight: 200;
        line-height: 58px;
    }
    .welcome-section span
    {
        display: block;
        font-weight: 600;
        font-size: 1.8em;
    }
    .img_logo
    {
        display: block;
        width: 260px;
        padding: 6px 0px;
    }
    .imgm_logo
    {
        display:none;
    }
    .section_subtopic
    {
        margin:20px 0;
        text-align:justify;
    }
    .video-container 
    {
        position: relative;
        width: 100%;
        padding-bottom: 56.25%; /* 16:9 aspect ratio */
        height: 0;
        overflow: hidden;
        margin: 20px 0 40px 0;
    }

    .video-container iframe 
    {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: 0;
    }
    .highlighted_props_p
    {
        text-align: center;
        font-weight:500;
    }
    .highlighted_props
    {
        font-family: "Times New Roman";
        text-align: center;
    }
    .section_heading
    {
        text-align:center;
    }
    .section_heading h2
    {
        padding-bottom:15px;
        text-align: center;
        border-bottom: 1px solid #c5c5c5;
        border-bottom: 1px solid #c5c5c5;
        margin-bottom: 20px;
        
    }
    .side_sections
    {
        display:none;
    }
    .mobile_side_container
    {
        display:none;

    }
    .hdiv
    {
        width: 100%;
    float: left;
    }
    .tabs_width
    {
        width:100%;
    }
    .main-container 
    {
        display: flex;
        justify-content: space-between;
        align-items: flex-start;
        gap: 20px;
        margin-top:70px;
        padding: 20px;
    }
    .div_props 
    {
        /*flex: 1;*/
        background: #f9f9f9;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        /* padding: 16px; */
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        overflow: auto;
        /*height: 85vh;*/
        width:22%;
    }
    .div_props_questions 
    {
        flex: 1;
        /* background: #f9f9f9; */
        /* border: 1px solid #e0e0e0; */
        border-radius: 8px;
        /* padding: 16px; */
        /* box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); */
        overflow: auto;
    }
    .side_container 
    {
        border-top: 3px solid #0066cc;
        /* border: 1px solid #e0e0e0; */
        /* border-radius: 8px; */
        padding: 16px;
        /*width: 100%;*/
        font-family: Arial, sans-serif;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    .header 
    {
        display: flex;
        align-items: center;
        margin-bottom: 12px;
    }
    .header img 
    {
        width: 32px;
        height: 32px;
        margin-right: 8px;
    }
    .header h3 
    {
        margin: 0;
        font-size: 16px;
        font-weight: 600;
    }
    .progress 
    {
        float: right;
        font-size: 14px;
        color: #888;
    }
    .content 
    {
        list-style: none;
        padding: 0;
        margin: 0;
        font-size: 14px;
        line-height: 1.8;
    }
    .content li 
    {
        margin-bottom: 8px;
    }
        .content a 
    {
        color:#141414;
		text-decoration:none;
		text-transform:capitalize;
    }	
        .content a:hover
    {
        color:grey;
		text-decoration:none;
    }    
    
    
    .button 
    {
        margin-top: 16px;
    }
    .button button 
    {
        background-color: #0052cc;
        color: white;
        border: none;
        padding: 10px 16px;
        font-size: 14px;
        border-radius: 4px;
        cursor: pointer;
    }
    .button button:hover 
    {
        background-color: #0040a8;
    }

    .tabs 
    {
        display: flex;
        /*margin-top: 20px;*/
        width:100%;
    }

    .tab 
    {
        padding: 10px 5%;
        background-color: #e6f2ff;
    /*  margin-right: 10px; */
        cursor: pointer;
        text-align: center;
      /*border: 1px solid #0066cc;
        border-radius: 5px 5px 0 0; */
    }
    .tab:hover 
    {
      background-color: #bbb;
    }
    .tab-content 
    {
        display: none;
        border-radius: 0 10px;
        width: 100%;
     /* border: 1px solid #d9d9d9; */
        background: #f9f9f9;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    .tab.active 
    {
        background-color: #0066cc;
        color:white;
    }
    .tab-content.active 
    {
        display: block;
        border-radius: 0 10px;
        width: 100%;
        /*border: 1px solid #d9d9d9;*/
        background: #f9f9f9;
        box-shadow: 0 2px 4px rgb(0 0 0 / 19%);
    }
        .history_container
    {
        padding:0 30px;
        text-align:justify;
    }
    .history_container h4
    {
        padding:20px 0px;
    }    
}

/*------------------------------------------------------------------------------------------------- */

    
@media (max-width: 768px) 
{
        /*---------------------sports menu----------------------------------------*/
    .class_sec a
    {
        font-size: 0.95em !important;
        padding: 0 3px !important;
        display: block !important;
        font-size: 1.2em;
        color: black;
        /* color: #007bff; */
        text-decoration: none;
        margin: 0.5em 0;
        transition: color 0.3s;        
    }
    .sec_div
    {
        width:100%;
        display:block;
    }
    .class_sec
    {
        width:100%;
        display:block;
    }
    .sports_sub
    {
        width:100%;
        display:block;
    }
    .sports_sub ul
    {
        list-style:none;
        padding:0px;
    }
    .sports_sub span
    {
        display:inline;
    }
    .sports_sub li
    {
        list-style:none;
        padding:0px;
    }
    .sports_sub p
    {
        font-size:1.2em;
    }    
    /*---------------------end sports menu----------------------------------------*/
    /*----------------------fixed bottom menu--------------------------------------*/
    .content_bottom_menu 
    {
        list-style: none;
        padding: 20px 30px 0 30px;
        margin: 0;
        font-size: 14px;
        line-height: 1.8;
        max-height: calc(100vh - 60px); /* Adjust as per header size */
        overflow-y: auto;
    }    
    .content_bottom_menu li 
    {
        margin-bottom: 8px;
    }
    .content_bottom_menu ul
    {
        margin-bottom: 8px;
        padding:0 20px;
    }    
        .content_bottom_menu a 
    {
        color:#141414;
		text-decoration:none;
		text-transform:capitalize;
    }	
        .content_bottom_menu a:hover
    {
        color:grey;
		text-decoration:none;
    }    
    
    /*----------------------bottom menu---------------------------------------------*/
        /* Fixed bottom menu button */
        .menu-toggle_bottom_menu {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            /*background-color: #333;*/
            background-color: white;
            color: black;
            text-align: center;
            padding: 15px;
            font-size: 18px;
            cursor: pointer;
            z-index: 1001;
        }

        /* Fullscreen overlay menu */
        .menu-overlay_bottom_menu {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100%;
            /*background-color: rgba(0, 0, 0, 0.8);*/
            background:white;
            color: black;
            display: none;
            flex-direction: column;
            z-index: 999;
            display:none;
        }

        .menu-header {
            padding: 15px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: #444;
        }

        .menu-header h2 {
            margin: 0;
            font-size: 20px;
        }

        .menu-header button {
            background: none;
            color: white;
            border: none;
            font-size: 20px;
            cursor: pointer;
        }

        .menu-list_bottom_menu {
            list-style: none;
            padding: 0;
            margin: 0;
            overflow-y: auto;
            flex: 1;
            
        }

        .menu-list_bottom_menu li {
            /*border-bottom: 1px solid #555;*/
            list-style:none;
            text-transform:capitalize;
        }

        .menu-list_bottom_menu a {
            display: block;
            padding: 5px;
            text-decoration: none;
            color: black;
            transition: background-color 0.3s;
        }

        .menu-list_bottom_menu a:hover {
            /*background-color: #555;*/
            background-color: #c5c5c5;            
        }

        .menu-overlay_bottom_menu.active {
            display: flex;
        }

        /* Scrollable menu for long lists */
        .menu-list_bottom_menu {
            max-height: calc(100vh - 60px); /* Adjust as per header size */
            overflow-y: auto;
        }
    /*----------------------solution tabs-------------------------------------------*/
    .trysolution1 
{
    display: none;
    background: #f3f3f3;
    padding: 20px;
    text-align:justify;
    border-radius: 0 10px 10px 10px;

}		
.trysolution2 
{
    display: none;
    background: #f3f3f3;
    padding: 20px;
    text-align:justify;
    border-radius: 0 10px 10px 10px;
    
}
.trysolution3 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;      

}			
.trysolution4 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}				
.trysolution5 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    
}		
.trysolution6 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}	
.trysolution7 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}
.trysolution8 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}
.trysolution9 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}
.trysolution10 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}        
.trysolution11 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}		
.trysolution12 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    
}	
.trysolution13 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}
.trysolution14 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;
    
}
.trysolution15 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}
.trysolution16 
{
    display: none;
    background: #f3f3f3;
    text-align:justify;
    padding: 20px;
    border-radius: 0 10px 10px 10px;

}        
/*----------------------------------------------------------------------------*/
    .history_container
    {
        padding:0 30px;
        text-align:justify;
    }
    .history_container h4
    {
        padding:15px 0px;
    }    
 /*    .history_container p
    {
        background:#c5c5c5;
    }        
   --------------------login--------------*/
        .login_btn 
    {
        background: #0066cc;
        color: white;
        border: 0px;
        padding: 15px 40px;
        font-size: 1em;
        letter-spacing: 1px;
        margin: 20px 0 20px 0;
    }
    .login_img_logo
    {
        display: block;
        width: 90%;
        margin: auto;
        /* padding: 6px 0px; 
        padding: 70px 0 55px 0;*/
        padding: 20px 0 30px 0;
    }
    .login_props
    {
        width:90%;
        margin:auto;
        display:block;
    }
    .login-container {
        background: #ffffff;
        padding: 5rem 2rem 2rem 2rem;
        border-radius: 10px;
        width: 80%;
        text-align: center;
        display: block;
        margin: auto;
        position: absolute;
        top: 0;
        border: 1px solid #dddddd;
        left: 0;
        bottom: 0;
        height: 45%;
        right: 0;
        }

    .login-container h1 {
      margin-bottom: 1.5rem;
      font-size: 1.8rem;
      color: #333333;
    }

    .login-container input[type="text"] {
        width: 100%;
        padding: 10px;
        margin: 0.5rem 0;
        border: 1px solid #cccccc;
        border-radius: 5px;
        font-size: 1rem;
        background: #f9f9f9;
    }
    .login-container input[type="password"] {
        width: 100%;
        padding: 10px;
        margin: 0.5rem 0;
        border: 1px solid #cccccc;
        border-radius: 5px;
        font-size: 1rem;
        background: #f9f9f9;
    }

    .login-container button {
      width: 100%;
      padding: 10px;
      background: #4facfe;
      border: none;
      border-radius: 5px;
      color: white;
      font-size: 1rem;
      cursor: pointer;
      margin-top: 1rem;
    }

    .login-container button:hover {
      background: #00a3cc;
    }

    .login-container a {
        display: block;
        margin-top: 0.8rem;
        color: #2b363e;
        text-decoration: none;
        font-size: 1.1em;
    }

    .login-container a:hover {
      text-decoration: underline;
    }
/*--------------------login end--------------*/
    
    .footer 
    {
        display: block;
        justify-content: space-between;
        align-items: inline-block;
        background-color: #333;
        color: white;
        padding: 2em;
        bottom: 0;
        box-sizing: border-box;
        width: 100%;
    }
    /* Footer Styles */
    
    .footer .mission 
    {
        width: 38%;
    }
    
    .footer .nav-links-footer 
    {
        list-style: none;
        padding: 0;
        margin: 0;
        width: 20%;
    }
    
    .footer .nav-links-footer li 
    {
        margin: 0.5em 0;
    }
    
    .footer .nav-links-footer a 
    {
        color: white;
        text-decoration: none;
        transition: color 0.3s;
    }
    
    .footer .nav-links-footer a:hover 
    {
        color: #00aaff;
    }
    
    .footer .social-icons 
    {
        display: flex;
        align-items: center;
        width: 20%;
        justify-content: flex-end;
    }
    
    .footer .social-icons a 
    {
        margin-left: 1em;
    }
    
    .footer .social-icons img 
    {
        width: 30px;
        height: 30px;
        transition: opacity 0.3s;
    }
    
    .footer .social-icons img:hover 
    {
        opacity: 0.7;
    }
    .welcome-section 
    {
        text-align: center;
        padding: 2em 1em;
        color: white;
        background-color: #f9f9f9;
        padding-top:90px;
        line-height: 1px;
        background-image: url('../images/welcome1.jpg'); /* Replace with your image URL */
    background-size: cover; /* Ensures the image covers the entire area */
    background-repeat: no-repeat; /* Prevents repeating of the image */
    background-attachment: fixed; /* Fixes the image in place */
    background-position: center; /* Centers the image */
    height: 100px;          
    }
    .welcome-section span
    {
        display: block;
        font-weight: 500;
        letter-spacing: 1px;
        color: #d9d9d9;
        font-size: 1.3em;
    }
    
    .welcome-section h1 
    {
        font-size: 1.4em;
        line-height: 1.2em;
        font-weight:300;
    }
    
    .welcome-section p 
    {
        font-size: 0.75em;
        margin: 5px 0;
        /*color: #444444;*/
        padding: 0.4em;
        line-height: 25px;
        color: white;
    }

    .welcome-section hr 
    {
        width: 80%;
    }
    .main-container 
    {
        position: absolute;
        top: 56px;
        width: 100%;        
    }
    .img_logo
    {
        display:block;
        width: 80%;
        padding: 0px;
        margin: auto;
    }
    /* .imgm_logo
    {
        display:block;
        width: 12%;
        padding: 0px;
    }*/
    .trythese h3
    {
        text-align:justify;
        border-bottom:1px solid #c5c5c5;
    
    }
    .solution_btn 
    {
        background: #0066cc;
        color: white;
        border: 0px;
        padding: 10px 18px;
        font-size: 0.9em;
        margin: 15px 0 0px 0;
    }
    .centered-div a 
    {
        display: block;
        font-size: 1em;
        color: black; /* Blue */
        /* color: #007BFF; Blue */
        text-decoration: none;
        margin: 5px 0;
    }
    .section_subtopic
    {
        margin:20px 0;padding: 0 20px;
        text-align:justify;
        font-size: 0.95em;
    }
    .padding_props p
    {
            font-size: 0.95em;
    }
    .padding_props h3
    {
        text-align:justify;
        /*border-bottom:4px solid #0066cc;*/
        margin-bottom:25px;
        padding-right:5px;    
    }
    /*  
    .video-container 
    {
        position: relative;
        width: 100%;
        padding-bottom: 56.25%; /* 16:9 aspect ratio 
        height: 0;
        overflow: hidden;
    }
    .video-container iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        border: 0;
    }*/
    
    .highlighted_props_p
    {
        text-align: center;
        font-weight:500;
        margin-top: 10px;
    }
    .highlighted_props
    {
        font-family: "Times New Roman";
        text-align: center;
        margin-bottom: 10px;
    }
    .logo 
    {
        font-size: 1.2em;
        color: black;
    }
    .mhprop
    {
        border-bottom: 1px solid #e0e0e0;padding-bottom:15px;margin-bottom:10px;
    }
    .div_props_questions
    {
        margin-bottom:50px;
    }
    #chapters_list
    {
        background:#f1f1f1;
        padding:5px 10px;
        border:0px;
        font-size: 16px;
    }
    .chapters_list
    {
        border-right: 1px solid #a9a9a9;
    }    
    #practice_list
    {
        background:#f1f1f1;
        padding:5px 10px;
        border:0px;
        font-size: 16px;
    }    
    .section_heading
    {
        font-size:14px !important;
        line-height: 20px;
        text-align: justify;
        /* float: left;
        padding: 0 15px; */
        /* border-bottom: 1px solid #c5c5c5; */
        /* margin-bottom: 20px;*/
    }
    .section_heading h2
    {
        /*font-size: 16px;*/
        padding: 20px;
        text-align: justify;
        border-bottom: 1px solid #c5c5c5;
        border-bottom: 1px solid #c5c5c5;
        margin-bottom: 20px;
        
    }
    .side_container
    {
       display:none;
    }        
            
    .tabs 
    {
        display: flex;
        margin-top: 20px;
        width:100%;
    }

    .tab 
    {
        padding: 10px 5%;
        background-color: #e6f2ff;
        width:50%;
      
  /*    margin-right: 10px; */
        cursor: pointer;
        text-align: center;
     /* border: 1px solid #0066cc;
        border-radius: 5px 5px 0 0; */
    }

    .tab:hover 
    {
        background-color: #bbb;
    }
    .tab-content 
    {
        display: none;
        width:100%;
      /*padding: 20px;*/
        background-color: #f9f9f9;
        border-top: 1px solid #ddd;
      /*border: 1px solid #ccc;*/
      /*border: 1px solid #0066cc;*/
        border-radius: 0 0 5px 5px;    
    }

    .tab.active 
    {
        background-color: #0066cc;
        color:white;
    }
    .tab-content.active 
    {
        display: block;
    }
    .footer 
    {
        flex-direction: column;
        align-items: center;
    }

    .footer .mission,
    .footer .nav-links-footer,
    .footer .social-icons 
    {
        width: 100%;
        text-align: center;
    }

    .footer .nav-links-footer 
    {
        margin: 1em 0;
    }

    .footer .social-icons 
    {
        margin-top: 1em;
    }    
        
    .mobile_side_container
    {
        display:none;
        position: fixed;
        background: white;
        width: 100%;
        bottom: 78px;
        border-top:1px solid #c5c5c5;

    }
    .mobile_side_container ul
    {
        list-style-type:none;
        text-align:center;
        padding:0px;
  
    }
    .mobile_side_container li
    {    
  
    }    
    .side_container
    {
        display:none;
    }
    .side_sections
    {
        position: fixed; /* Sticks the element relative to the viewport */
        bottom: 0;      /* Positions it at the bottom */
        /*left: 0;         Ensures it spans from the left */
        width: 100%;    /* Makes it full width */
        background-color: #f1f1f1; /* Optional styling */
        text-align: center; /* Center-align text */
        padding: 10px; /* Adds some padding */
        box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1); /* Optional shadow for effect */
        z-index:1000;
    }
    .side_sections li
    {
        display: inline-block;
        padding: 0 10px;
        text-align: center;
        width: 33%;
    }
    .side_sections ul
    {
        padding:0 10px;
        margin: 5px 0;        
    }    
    #myDiv
    {
        padding:20px;
    }
    .padding_prop
    {
        padding:20px;
    }
    .history_btn
    {
        float:left;
        width:100%;        
        margin-bottom:20px;
    }
    .ncert_container
    {
        margin-top: 58px;
        float: left;
        width: 100%;
    }
    .centered-heading
    {
        margin-top:25px;
        text-align: center;
        margin-bottom: 40px;
    }
    .centered-div 
    {
        text-align: center;
        background-color: rgba(0, 0, 0, 0.05); /* Very light black */
        margin: 20px auto;
        padding: 20px 25px;
        border-radius: 10px;
        width: 80%;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    .centered-div h3 
    {
        font-size: 1.5em;
        color: #333; /* Dark gray */
        margin-bottom: 10px;
        margin-top: 5px;      
    }
    .centered-div a 
    {
        display: block;
        font-size: 0.95em;
        color: black; /* Blue */
      /*color: #007BFF; Blue */
        text-decoration: none;
        margin: 10px 0;
        line-height: 22px;
        text-align:justify;
    }
    .centered-div a:hover 
    {
      /*text-decoration: underline;*/
        text-decoration: none;
        color: #0056b3; /* Darker blue */
    }
    .center-div 
    {
        text-align: center;
        margin: auto;
        padding-top: 2em;
        color: black;
        background-color: #f0f0f0;
        width: 100%;
        /* border-radius: 8px; */
        padding-bottom: 4em;
        margin-top: 56px;
    }
    .center-div a
    {
        text-decoration:none;
        color:black;
        font-weight:600;
    }
    .center-div h1
    {
        line-height:1em;
    }
    .center-div h3
    {
        font-weight: 300;
        padding: 0 0 20px 0;
    }
    .image-container 
    {
        text-align: center;
    }
    .image-container img 
    {
        max-width: 150px;
        border: 2px solid #ddd;
        border-radius: 10px;
    }
    .books_props a
    {
        color:black;
        text-decoration:none;
    }    
    .menu-toggle 
    {
        display: block;
    }

    .nav-links 
    {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 56px;
        left: 0;
        z-index: 0;
        width: 100%;
        background-color: white;
        padding: 0;
        border-bottom: 1px solid #ccc;
        border-top: 1px solid #ccc;
    }

    .nav-links.active 
    {
        display: flex;
    }

    .nav-links li 
    {
        width: 100%;
        text-align: center;
        margin: 0;
        border-bottom: 1px solid #ccc;
    }

    .nav-links li:last-child 
    {
        border-bottom: none;
    }

    .nav-links a 
    {
        display: block;
        padding: 1em 0;
        color: black;
    }

    .right-section 
    {
        flex-direction: column;
        margin-top: 1em;
        width: 100%;
        align-items: center;
    }
    
    .search-bar,
    .notification,
    .login-btn 
    {
        width: 90%;
        text-align: center;
        margin: 1em;
    }

    .search-bar input 
    {
        width: 100%;
    }

    .subject-section 
    {
        width: 75%;
        text-align: center;
        margin: 2em auto;
        padding: 2em 2em 40px 2em;
        color: black;
        background-color: #f0f0f0;
        border-radius: 8px;
        
    }
    .subject-section h2 
    {
       font-size: 1.5em;
    }

    .subject-section a 
    {
        font-size: 0.95em;
        padding: 0 3px;
        display:inline-block;
    }
}