body {
    font-family: "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif;
}

textarea {
    width: 100%;
    height: 20em;
    resize: none;
    white-space: pre;
}

section {
    max-width: 45em;
    margin: 0 auto;
}

fieldset {
    width: 25em;
}

h1 {
    text-align: center;
    margin-bottom: 0;
}

h2 {
    margin-top: 0;
    margin-bottom: 0;
}

header {
    position: relative;
}

footer {
    width: 100%;
    text-align: center;
    font-size: small;
}

fieldset {
    margin: 1em auto 1em auto;
}

.size {
    font-size: small;
    position: absolute;
    right: 0;
    bottom: 0;
    text-align: right;
}

#options {
    text-align: center;
}

#minify {
    margin-left: 1em;
}

section > div {
    margin: auto;
    text-align: center;
}