#app{font-family:Microsoft YaHei,Avenir,Helvetica,Arial,sans-serif}article,aside,blockquote,body,button,code,dd,details,div,dl,dt,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,header,hgroup,hr,input,legend,li,menu,nav,ol,p,pre,section,td,textarea,th,ul{margin:0;padding:0}li,ul{list-style-type:none}a{text-decoration:none}button{position:relative;outline:none}button:before{content:"";position:absolute;top:50%;left:50%;width:100%;height:100%;background-color:#000;border:inherit;border-color:#000;border-radius:inherit;opacity:0;-webkit-transform:translate(-50%,-50%);transform:translate(-50%,-50%)}button:active:before{opacity:.1}.fade-enter-active,.fade-leave-active{-webkit-transition:opacity .5s;transition:opacity .5s}.fade-enter,.fade-leave-to{opacity:0}