.tdg-main{width:100%;position:relative}.tdg-main img.bg{width:100%;display:block}.tdg-main .bottom{text-align:center;font-size:.3rem;color:#999;line-height:1.5;padding-bottom:3rem}.tdg-main .btn{width:7.04rem;height:1.44rem;line-height:1.44rem;border-radius:1rem;font-size:.48rem;font-weight:700;text-align:center;position:absolute;left:50%;margin-left:-3.52rem}.tdg-main .btn.default{background:#fff;color:#ff9100;top:16.85rem}.tdg-main .btn.fixed{width:7.68rem;height:2.1rem;position:fixed;margin-left:-3.84rem;bottom:-2.11rem;color:#fff;background-image:url(https://zhanstatic.vivo.com.cn/wukong/img/7b1c7739-1d51-4c9a-8bb2-87fbf78d334anwebp.png);background-size:cover;-webkit-transition:all .2s ease-out;transition:all .2s ease-out}.tdg-main .btn.fixed.show{bottom:.4rem}