body {
    font-family: Arial, sans-serif;
    margin: 20px;
    background-color: #f7f7f7;
}
nav ul {
    list-style: none;
    padding: 0;
    background-color: #333;
    overflow: hidden;
    display: flex;
}
nav ul li {
    flex: 1;
}
nav ul li a {
    display: block;
    text-align: center;
    padding: 14px;
    color: white;
    text-decoration: none;
    font-weight: bold;
}
nav ul li a:hover {
    background-color: #444;
}
table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
    margin-top: 20px;
}
th, td {
    padding: 12px;
    border: 1px solid #ccc;
    text-align: center;
}
img {
    border-radius: 8px;
}
button, a.button {
    background-color: #4CAF50;
    border: none;
    color: white;
    padding: 8px 16px;
    text-align: center;
    text-decoration: none;
    font-size: 14px;
    margin: 4px;
    border-radius: 4px;
    cursor: pointer;
}
a.button:hover {
    background-color: #45a049;
}