.uniqueButton{position:relative;display:inline-block;padding:14px 35px;background:#fff;color:#000;border:2px solid #000;font-size:16px;font-weight:600;letter-spacing:1px;text-transform:uppercase;border-radius:6px;cursor:pointer;overflow:hidden;transition:transform .3s ease,box-shadow .3s ease,color .3s ease}.uniqueButton::before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:#000;z-index:1;transition:all .4s ease-in-out}.uniqueButton span{position:relative;z-index:2}.uniqueButton:hover::before{left:0}.uniqueButton:hover{color:#fff;transform:translateY(-5px);box-shadow:0 10px 20px rgba(0,0,0,.3)}