* {
    box-sizing: border-box;
    margin: 0em;
    padding: 4px;
    font-size: 10pt;
    font-family: sans-serif;
    color: #333;
    background: lightgray;
}

nav {
    border-bottom: solid 3px #ccc;
}

a {
    color: green;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}