.apst-wrapper,.apst-wrapper::before,.apst-wrapper::after,.apst-wrapper *,.apst-wrapper *::before,.apst-wrapper *::after{-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{display:none;position:fixed;z-index:99999;cursor:pointer;box-sizing:border-box;-webkit-tap-highlight-color:rgba(0,0,0,0);-webkit-tap-highlight-color:transparent;-webkit-touch-callout:none;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.apst-top{top:20px}.apst-bottom{bottom:20px}.apst-left{left:20px}.apst-center{left:50%;margin-left:-40px}.apst-right{right:20px}.apst-button{width:80px;height:80px;background-color:#7b8ab8;-webkit-border-radius:50%;-moz-border-radius:50%;-ms-border-radius:50%;-o-border-radius:50%;border-radius:50%}.apst-button,.apst-button::before{display:block;position:relative;-webkit-transition:all .2s;-moz-transition:all .2s;-ms-transition:all .2s;-o-transition:all .2s;transition:all .2s}.apst-button::before{content:"";left:29px;top:33px;width:22px;height:22px;border-right:6px solid #fff;border-top:6px solid #fff;-webkit-transform:rotate(-45deg);-moz-transform:rotate(-45deg);-ms-transform:rotate(-45deg);-o-transform:rotate(-45deg);transform:rotate(-45deg)}.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{width:70px;height:70px}.apst-button::before{left:25px;top:27px;width:20px;height:20px}}@media only screen and (max-width:400px){.apst-center{margin-left:-30px}.apst-button{width:60px;height:60px}.apst-button::before{left:21px;top:23px;width:18px;height:18px;border-width:5px}}