* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

html {
    font: 17px/1.5rem sans-serif;
}

body {
    max-width: 59rem;
    padding: 0 1rem;
    margin: auto;
}

h1 {
    margin-top: 1.5rem;
    margin-bottom: 1.5rem;
    padding-left: 1rem;
}

h2 {
    margin-bottom: 1.5rem;
}

p {
    margin-bottom: 1.5rem;
}

footer {
    color: silver;
}

section {
    padding: 1rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 0 1rem silver;
}

section.editor {
}

section.editor code {
    background-color: #eee;
    border: 1px solid #ddd;
    border-radius: 0.25rem;
    padding: 0 0.25rem;
}

section.editor textarea {
    min-width: 100%;
    max-width: 100%;
    min-height: 9rem;
    border: none;
    border-top: 1px dashed silver;
    background-color: #eee;
    padding: .5rem;
    font-size: 100%;
}

section.preview {
    color: #666;
    background-color: #000;
    box-shadow: 0 0 1rem black;
}

section.preview img {
    display: block;
    margin: 1.5rem auto;
    max-width: 100%;
}