.top-box[data-v-2300818e]{width:100%;height:30px}.mian-box[data-v-2300818e]{width:100%}.bts-box[data-v-2300818e]{position:absolute;left:50%;-webkit-transform:translateX(-50%,-50%);transform:translateX(-50%,-50%)}.hidden_class[data-v-2300818e]{width:50px;z-index:-999;outline:none;position:absolute;margin-left:-100px}