body {
font-family: Arial, sans-serif;
line-height: 1.5;
max-width: 64em;
margin: 2em auto;
padding: 0 1em;
}
h1 {
letter-spacing: -3px;
font-size: 3.23em;
font-weight: bold;
margin: 0;
.CodeMirror {
height: auto;
.CodeMirror .CodeMirror-lines {
padding: 4px 0;