body {
    font-family: sans-serif;
    padding: 0 20px;
    background-color: #FFF;
}

* {
    box-sizing: border-box;
}

h1 {
    font-size: 20px;
    color: #444;
}

h3 {
    margin: 10px 0 5px 0;
    font-size: 16px;
    color: #555;
}

hr {
    margin-bottom: 20px;
}

code {
    display: block;
    white-space: pre-wrap;
    background-color: antiquewhite;
    padding: 5px;
    font-size: 11px;
    margin: 5px 0;
}

textarea {
    width: 100%;
    height: 50px;
    margin: 10px 0;
}