.apst-wrapper,.apst-wrapper *,.apst-wrapper :after,.apst-wrapper :before,.apst-wrapper:after,.apst-wrapper:before{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-ms-box-sizing:border-box;-o-box-sizing:border-box;box-sizing:border-box}.apst-wrapper{-webkit-tap-highlight-color:rgba(0,0,0,0);-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;position:fixed;box-sizing:border-box;cursor:pointer;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;display:none;z-index:99999}.apst-top{top:20px}.apst-bottom{bottom:20px}.apst-left{left:20px}.apst-center{margin-left:-40px;left:50%}.apst-right{right:20px;bottom:110px}.apst-button{height:80px;background-color:red;-webkit-border-radius:50%;-moz-border-radius:50%;-ms-border-radius:50%;-o-border-radius:50%;border-radius:50%;width:80px}.apst-button,.apst-button:before{-webkit-transition:all .2s;-moz-transition:all .2s;-ms-transition:all .2s;-o-transition:all .2s;transition:all .2s;position:relative;display:block}.apst-button:before{height:22px;border-right:6px solid #fff;-webkit-transform:rotate(-45deg);-moz-transform:rotate(-45deg);-ms-transform:rotate(-45deg);-o-transform:rotate(-45deg);transform:rotate(-45deg);content:"";border-top:6px solid #fff;top:33px;left:29px;width:22px}.apst-button:hover{background-color:#333}.apst-button:hover:before{border-color:#fff}@media only screen and (max-width:640px){.apst-center{margin-left:-35px}.apst-button{height:70px;width:70px}.apst-button:before{height:20px;top:27px;left:25px;width:20px}}@media only screen and (max-width:400px){.apst-center{margin-left:-30px}.apst-button{height:60px;width:60px}.apst-button:before{height:18px;border-width:5px;top:23px;left:21px;width:18px}}