#example{display:flex;flex-direction:row}#paper{margin:10px;border:1px solid #ccc}[data-tool-name=remove]:hover circle{opacity:1}#toolbar{display:flex;flex-direction:column}#toolbar fieldset{width:270px;font-family:Arial,sans-serif;font-size:14px;display:inline-block;margin:10px;padding:10px;border:1px solid #ccc;border-radius:5px;background-color:#f9f9f9}#toolbar button{display:block;margin:5px;padding:5px 10px;border:none;border-radius:3px;background-color:#007bff;color:#fff;cursor:pointer}#toolbar button:hover{background-color:#0056b3}#toolbar input[type=number]{width:60px}