body {
            font-family: 'Arial', sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
        }
        
        .div_datatable{
                    max-width: 90%; /* Adjusted maximum width */
                    margin: 0 auto;
                    padding: 20px;
                    position: relative;
                    z-index:2;
        }
        .container {
            max-width: 90%; /* Adjusted maximum width */
            margin: 0 auto;
            padding: 20px;
            position: relative;
            margin-bottom:20px;
        }
        
        
        .login-container {
    max-width: 400px;
    margin: 0 auto;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    background-color: #fff;
    border-radius: 5px;
    position: relative;

}

.login-container h2 {
    text-align: center;
    color: #333;
}

.login-container img {
    width: 100%;
    border-radius: 5px;
    margin-bottom: 20px;
}


        

        header {
            background-color: #51e2f5;
            color: black;
            padding: 10px 20px;
            display: flex;
            flex-wrap: wrap; /* Allow items to wrap onto the next line */
            justify-content: space-between;
            align-items: center;
            position: absolute;
            width: 90%;
        }

        header h1 {
            margin: 0;
            font-size: 24px;
            flex-grow: 1; /* Allow header text to grow and push the menu button to the next line */
        }

        .menu-btn {
            font-size: 24px;
            cursor: pointer;
            z-index: 3;
            margin-top: 10px; /* Adjusted margin top for spacing */
        }

        .navigation {
            display: none;
            position: absolute;
            top: 60px;
            right: 20px;
            background-color: #51e2f5;
            border-radius: 4px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
            width: 90%;
            z-index:10;
        }

        .navigation ul {
            list-style-type: none;
            padding: 0;
            margin: 0;
        }

        .navigation li {
            padding: 10px;
        }

        .navigation a {
            color: black;
            text-decoration: none;
            font-weight: bold;
            font-size: 16px;
            display: block;
        }

        .intro {
            position: relative;
            margin-left: 2%;
            margin-top: 2%;
            padding-right:5%;
        }

        .intro img {
            width: 95%; /* Adjusted image width for smartphones */
        }
        

        
  td{
      padding:5px;
  }  
  
  
/* Add this to your existing CSS or replace the checkbox styles */

input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    width: 20px;
    height: 20px;
    position: relative;
    border: 2px solid #3498db; /* Border color for unchecked state */
    border-radius: 5px;
    outline: none;
    transition: background-color 0.3s, border-color 0.3s;
    cursor: pointer;
}

input[type="checkbox"]:checked {
    background-color: #3498db; /* Background color for checked state */
    border-color: #3498db; /* Border color for checked state */
}

input[type="checkbox"]:checked::before {
    content: '\2713'; /* Unicode checkmark character */
    font-size: 14px;
    color: white;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

  


.details-container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}




input {
    width: 90%;
    padding: 8px;
    font-size:12pt;
}

textarea {
    width: 90%;
    height: 60px;
    padding: 8px;
    font-family: 'Arial', sans-serif;
    font-size:12pt;
}


button {
    background-color: #4CAF50;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}
 
 
.lbl {
    display: block;
    margin-bottom: 5px;
    color: #333;
}       
        
   

        /* Responsive Styles */
        @media (min-width: 769px) {
        
            .navigation {
                display: none;
                position: absolute;
                top: 85px;
                left: 1px;
                background-color: #51e2f5;
                border-radius: 4px;
                box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
                /* width: 100%; */
                max-width: 48%; /* Adjusted maximum width */
                margin: 0 auto;
                z-index:10;
            }        
        
            .container {
                max-width: 50%; /* Adjusted maximum width */
                margin: 0 auto;
                padding: 20px;
                position: relative;
                margin-bottom:20px;
            }
            
            
            .div_datatable{
                max-width: 90%; /* Adjusted maximum width */
                margin: 0 auto;
                padding: 20px;
                position: relative;
                z-index:2;
            width:50%;
            }
            
            .start_per{
                width:25%;
            }
            
            header {
                margin-left:-2.5%;
                background-color: #51e2f5;
                color: black;
                padding: 10px 20px;
                display: flex;

                justify-content: space-between;

  
                width: 95%;
            }            
                
            .intro {
                position: relative;
                max-width: 48%; /* Adjusted maximum width */
                margin: 0 auto;
                padding: 20px;
                position: relative;
                margin-top: 2%;
                border: 1px solid grey;
    
            }
            
        }

@media (max-width: 768px) {
    header {
        flex-direction: column;
        align-items: center;
        position: static;
    }

    header h1 {
        font-size: 20px;
        margin-top: 10px;
    }

    .menu-btn {
        margin-top: 10px;
    }

    .navigation {
        top: 90px;
        right: 5%;
        left: 5%;
        width: 90%;
        z-index:10;
        box-shadow: none;
    }
    
    .login-container {
        width: 90%;
    }
}