@font-face {
    font-family: 'SegoeLight';
    src: url(//:) format('no404'), url(https://appservice.azureedge.net/fonts/segoe-ui-light-latest.woff2);
    font-weight: normal;
    font-style: normal;
}

body {
    background-color: #0078d7;
    font-family: 'SegoeLight', helvetica, sans-serif;
    font-size: 2.7vmin;
    margin: 0;
}

main {
    padding: 1rem;
}

h1 {
    color: #fff;
}

ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    overflow: hidden;
    background-color: #333;
}

li {
    float: left;
}

li a {
    display: inline-block;
    color: white;
    text-align: center;
    padding: 14px 16px;
    text-decoration: none;
}

li a:hover {
    background-color: #111;
}

.active {
    background-color: red;
}