body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

header {
    background-color: darkblue;
    color: white;
    text-align: center;
    padding: 20px;
}

nav {
    background-color: #222;
    padding: 10px;
    text-align: center;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 15px;
    font-size: 18px;
}

nav a:hover {
    color: yellow;
}

main {
    padding: 20px;
}

img {
    width: 350px;
    border-radius: 10px;
    margin-top: 15px;
}

button {
    padding: 15px 25px;
    font-size: 18px;
    margin: 10px;
    cursor: pointer;
}

button:hover {
    background-color: darkblue;
    color: white;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: white;
}

table, th, td {
    border: 1px solid black;
}

th {
    background-color: darkblue;
    color: white;
}

th, td {
    padding: 12px;
    text-align: center;
}