.oew-btn-effect-16 a{position:relative;border:1px solid rgba(0, 0, 0, 0.2);overflow:hidden}.oew-btn-effect-16 a span{position:relative;z-index:2}.oew-btn-effect-16 a::before,.oew-btn-effect-16 a::after{content:"";position:absolute;top:0;left:0;width:100%;height:100%;z-index:1;background-color:rgba(0, 0, 0, 0.15);-webkit-transition:all .3s;-moz-transition:all .3s;-o-transition:all .3s;transition:all .3s;-webkit-transform:translate(-100%, 0);transform:translate(-100%, 0);-webkit-transition-timing-function:cubic-bezier(0.75, 0, 0.125, 1);transition-timing-function:cubic-bezier(0.75, 0, 0.125, 1)}.oew-btn-effect-16 a::after{-webkit-transition-delay:.2s;transition-delay:.2s}.oew-btn-effect-16 a:hover::before,.oew-btn-effect-16 a:hover::after{-webkit-transform:translate(0, 0);transform:translate(0, 0)}