/* Add horizontal scroll-bar to code block. */
pre, code, .chroma {
    white-space: pre !important;
    overflow-x: auto !important;
    word-break: normal !important;
    word-wrap: normal !important;
    display: block !important;
    width: 100% !important;
}
.chroma::-webkit-scrollbar, pre::-webkit-scrollbar {
    height: 8px !important;
}
.chroma::-webkit-scrollbar-track, pre::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05) !important;
    border-radius: 4px !important;
}
.chroma::-webkit-scrollbar-thumb, pre::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2) !important;
    border-radius: 4px !important;
}