html {
    font-family: sans-serif;
    max-width: 600px;
    padding: 6px;
    line-height: 1.5;
    margin: auto;
}

h1 {
    font-size: 225%;
}

p, ul, ol, a {
    font-size: 18px;
}

pre {
    outline: 1px solid black;
    padding: 2px;
    overflow: auto;
    font-size: 16px;
}

img {
    max-width: 100%;
}

.svglink {
    width: 20px;
    display: inline-block;
}

header > h1 {
    font-size: 25px;
    margin-bottom: 0;
}