body {
    font-family: Arial, sans-serif;
    background-color: #f5f0e6;
    font-size: 18px;
}

h1 {
    text-align: center;
    color: green;
}

.nav {
    text-align: center;
}

.nav img {
    display: block;
    margin: 10px auto;
    width: 200px;
    height: 200px;

}

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

th, td {
    padding: 8px;
}