body{
    color: #444;
    margin: 0;
    padding: 0;
    background-color: #f4f6f9;
    line-height: 1.6;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

header{
    background-color: #4caf50;
    color: white;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 24px 0;
    text-align: center;
}

header a {
    text-decoration: none;
    color: inherit;
}

header h1 {
    font-size: 40px;
    margin: 0;
}

nav {
    background-color: #343a40;
    text-align: center;
    padding: 12px 0;
}

nav a {
    text-decoration: none;
    color: white;
    margin: 0 20px;
    font-weight: 600;
    font-size: 18px;
    letter-spacing: 0.5px;
}

 nav a:hover {
    color: #ff6347;
    text-decoration: underline;
 }

 section {
    background-color: #ffffff;
    border-radius: 8px;
    margin: 20px auto;
    max-width: 900px;
    box-shadow: 0 2px 10px rgba(0,0,0, 0.1);
    padding: 24px;
    transition: box-shadow 0.3s ease;
 }

 section:hover {
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.15);
 }

 section h2 {
    color: #007bff;
    font-size: 28px;
    margin-bottom: 14px;
 }

 table {
    width: 100%;
    margin-top: 14px;
    border-collapse: collapse;
 }

 table th, table td {
    padding: 12px;
    text-align: left;
    border: 1px solid #ddd;
 }

 table th {
    background-color: #f1f1f1;
    font-weight: 600;
    color: #333;
 }

 table tr:nth-child(even) {
    background-color: #f9f9f9;
 }

 ul {
    list-style: none;
    padding: 0;
 }

 ul li {
    margin: 12px 0;
    font-size: 20px;
 }

 ul li strong {
    color: #007bff;
 }

 form {
    max-width: 650px;
    margin: 24px auto;
 }

 form label{
    margin-bottom: 8px;
    font-weight: 600;
    display: block;
 }

 form input, form textarea, form button {
    width: 100%;
    padding: 14px;
    margin-bottom: 18px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
 }

 form input:focus, form textarea:focus {
    border-color: #007bff;
    outline: none;
 }

 form button {
    background-color: #007bff;
    color: white;
    font-size: 18px;
    font-weight: 600;
    border: none;
    transition: background-color 0.3s ease;
    cursor: pointer;
 }

 form button:hover {
    background-color: #0056b3;
 }

 form button:active {
    background-color: #004085;
 }