.bottomd>div:hover{background:#0ff;color:#000;animation:headShake;animation-duration:1s;transition-duration:1s}.bottomd>div{transition-duration:1s;display:block;background:#000;margin:25px 10px;width:200px;color:#fff;font-size:32px;line-height:200px;text-align:center;height:200px;border-radius:100px}