.key{position:relative;display:flex;justify-content:center;align-items:center;width:100px;height:100px;padding:4px 7px;font-size:4rem;color:#ffffff;background-color:#495057;border-radius:10px;box-shadow:5px 5px 0 rgba(73,80,87,.8),inset -2px -2px 10px #131313;cursor:pointer}.container .key:active{box-shadow:3px 3px 0 rgba(73,80,87,.8),inset -7px -7px 10px #131313;transform:translate(2px,2px);transition:.2s}.key .extra{position:absolute;top:10%;left:15%;font-size:2.5rem}