.home{height:100vh;position:relative}.home .banner{display:inline-block;width:100%;height:0;padding-top:150%;background-color:#2f4f4f;background-size:auto 100%}.tips{width:100%;position:absolute;top:50%;left:0;margin-top:-150px;color:#fff}.tips p{padding:0;margin:0}.tips .tips_title{font-size:32px;font-weight:700;text-shadow:0 1px 1px rgba(0,0,0,.15)}.tips .tips_descript{font-size:20px;padding-top:12px}.button{height:56px;width:246px;line-height:56px;background-color:olive;background-size:100% 100%;position:absolute;top:50%;left:50%;margin-left:-123px;margin-top:-100px;outline:none;border:none;-webkit-appearance:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;color:#fff;font-size:18px;filter:drop-shadow(1px 1px 5px rgba(0,0,0,.25))}@keyframes move{0%{transform:translateY(0)}50%{transform:translateY(36px)}to{transform:translateY(0)}}