.oew-btn-effect-9 a{border:1px solid rgba(0,0,0,0.2);position:relative;overflow:hidden}.oew-btn-effect-9 a span{position:relative;z-index:2}.oew-btn-effect-9 a::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;z-index:1;opacity:0;background-color:rgba(0,0,0,0.2);-webkit-transition:all 0.5s;-moz-transition:all 0.5s;-o-transition:all 0.5s;transition:all 0.5s}.oew-btn-effect-9 a:hover::before{opacity:1;-webkit-transform:skewX(-180deg) scale(0.5, 1);transform:skewX(-180deg) scale(0.5, 1)}