html {
    font-family: sans-serif;
    line-height: 1.3;
}

body {
    max-width: 55em;
    margin: auto;
    padding: 1em;
}

a {
    color: blue;
}

p > img {
    max-width: 100%;
}

header {
    margin-bottom: 2em;
}

header > h1 {
    margin-bottom: 0;
}

code {
    font-size: 1rem;
    color: #cf103d;
}