.magnet_button{height:150px;width:150px;border-radius:50%;background-color:#139948;font-size:18px;color:#f5f7fc;margin:1em 0;border:none;position:relative;cursor:pointer}.magnet_button span{content:"";background-color:#139948;border-radius:100%;-webkit-transform:scale(0);border:2px solid #139948}.magnet_button span,.magnet_button:hover span{position:absolute;width:150px;height:150px;left:0;top:0;z-index:-1;transition:all .3s}.magnet_button:hover span{border-radius:50%;background-color:#000;-webkit-transform:scale(1)}