#scrolltopbtn{overflow:hidden}.btn-primary,.an_productattributes-add-to-cart-btn{position:relative;overflow:hidden}#scrolltopbtn::before,.btn-primary::before,.an_productattributes-add-to-cart-btn::before{position:absolute;top:0;left:-75%;z-index:2;display:block;content:'';width:50%;height:100%;background:-webkit-linear-gradient(left,rgba(255,255,255,0) 0%,rgba(255,255,255,.3) 100%);background:linear-gradient(to right,rgba(255,255,255,0) 0%,rgba(255,255,255,.3) 100%);-webkit-transform:skewX(-25deg);transform:skewX(-25deg)}#scrolltopbtn:hover::before{-webkit-animation:shine .5s;animation:shine .5s}.btn-primary:hover::before,.an_productattributes-add-to-cart-btn:hover::before{-webkit-animation:shine .75s;animation:shine .75s}@-webkit-keyframes shine {
    100% {
        left: 125%;
    }
}@keyframes shine {
    100% {
        left: 125%;
    }
}