[data-copy]{position:relative;}
[data-copy]::after{position:absolute;display:block;content:"copied";font-size:0.9em;line-height:2em;padding:0 1em;color:#fff;background-color:#777;border-radius:0.25rem;opacity:0;transition:0.2s;}
.copied[data-copy]{overflow: visible!important;}
.copied[data-copy]::after{opacity:1}