#app,body,html{height:100%}#app{width:15rem;margin:0 auto}.twitter-introduce-page .bg-pic{width:100%}.twitter-introduce-page .operate-btn{position:fixed;bottom:0;width:15rem;height:2rem;line-height:2rem;font-size:.64rem}.twitter-introduce-page .operate-btn .buy-btn,.twitter-introduce-page .operate-btn .try-btn{display:block;height:2rem;text-align:center;letter-spacing:.0264rem}.twitter-introduce-page .operate-btn .try-btn{background-image:-webkit-linear-gradient(top,#ffdbbb,#ffc490);background-image:linear-gradient(-180deg,#ffdbbb,#ffc490);width:6.2rem;color:#222;float:left}.twitter-introduce-page .operate-btn .buy-btn{background-image:-webkit-linear-gradient(top,#444,#000);background-image:linear-gradient(-180deg,#444,#000);color:#ffc490}.twitter-introduce-page .introduce-more{position:fixed;bottom:4rem;right:.4rem;display:inline-block;width:3.2rem;height:3rem;background:url(../images/introduce-more.png?v=932cf1bf) no-repeat;background-size:contain;z-index:1}