html,
body {
    background-color: white;
    font-family: serif;
    font-weight: 300;
    font-size: 1.2em;
    line-height: 1.5em;
}

#container {
    max-width: 80vw;
    margin: 60px;
}

img {
    max-width: 50vw;
    width: 500px;
}

mark {
    font-weight: bold;
}

a {
    color: blue;
}

a:hover {
    background-color: blue;
    color: white;
}

@media only screen and (min-width: 800px) {

    #container {
        max-width: 600px;
    }

}