html,
body {
    height: 100%;
    background-color: #333;
    font-size: 110%;
}

.container {
    max-width: 30em;
}

.header-link {
    max-width: 150px;
}

.main {
    min-height: 60vh;
}

.footer a {
    margin: 0px 10px;
    font-size: 80%;
}

.home-buttons {
    min-height: 100px;
    color: white;
}

.home-buttons img {
    width: 80px;
}