details{background:#eee}details summary{background:rgba(0,0,0,0)}details *{box-sizing:border-box;padding:.3rem;margin:0;background:#fff;box-shadow:inset 0 0 .3rem #eee}details pre{font-family:monospace;font-size:1rem;line-height:1.6}details blockquote{max-width:60ch;line-height:1.3;padding:.3rem .3rem .3rem 3rem}