.xaringanextra-clipboard-button{position:absolute;top:0;right:0;font-size:.8em;padding:.5em;display:none;background-color:transparent;border:none;opacity:.5;border-radius:0}.xaringanextra-clipboard-button:hover{background-color:rgba(0,0,0,.1);border:none;opacity:1}:hover>.xaringanextra-clipboard-button{display:block;transform:translateY(0)}