.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{display:block;position:relative;width:80px;height:80px;background-color:#555;-webkit-border-radius:50%;-moz-border-radius:50%;-ms-border-radius:50%;-o-border-radius:50%;border-radius:50%;-webkit-transition:all 0.2s;-moz-transition:all 0.2s;-ms-transition:all 0.2s;-o-transition:all 0.2s;transition:all 0.2s;}
.apst-button::before{content:"";display:block;position:relative;left:29px;top:33px;width:22px;height:22px;border-right:6px solid white;border-top:6px solid white;-webkit-transform:rotate(-45deg);-moz-transform:rotate(-45deg);-ms-transform:rotate(-45deg);-o-transform:rotate(-45deg);transform:rotate(-45deg);-webkit-transition:all 0.2s;-moz-transition:all 0.2s;-ms-transition:all 0.2s;-o-transition:all 0.2s;transition:all 0.2s;}
.apst-button:hover{background-color:#333;}
.apst-button:hover::before{border-color:white;}
@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;}
}