body {
    font-family: "Menlo", monospace;
}

.colors {
    margin-bottom: 16px;
}

.color {
    margin-bottom: 8px;
    padding: 4px;
    box-shadow: lightgrey 0 0 4px;
}

.contrast {
    margin-bottom: 8px;
    box-shadow: lightgrey 0 0 4px;
}

.contrast .back {
    padding: 4px;
}