#myBtn {display: none; position: fixed; bottom: 68px; right: 20px; z-index: 99; border: none; outline: none; background-color: grey; color: white; cursor: pointer; padding: 8px; border-radius: 0px; font-size: 13px; }#myBtn:hover {background-color: #444; }.box {border-radius: 0;}