body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 20px;
    background-color: #f4f4f4;
    color: #333;
}

h1 {
    color: #2c3e50;
}

.h2 {
    color: #2c3e50;
    border-bottom: 2px solid #3498db;
    display: inline-block;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background-color: #fff;
}

table, th, td {
    border: 1px solid #bdc3c7;
    text-align: center;
}

th, td {
    padding: 12px;
}

th {
    background-color: #3498db;
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

.nav-button {
    display: inline-block;
    padding: 10px 20px;
    font-size: 16px;
    color: white;
    background-color: #e67e22;
    text-decoration: none;
    border-radius: 5px;
    border: none;
    transition: background-color 0.3s ease;
    cursor: pointer;
    margin: 10px 0;
}

.nav-button:hover {
    background-color: #d35400;
}

.button-container {
    margin-bottom: 20px;
}