.top-box[data-v-1b5bcb27]{width:100%;height:145px}.mian-box[data-v-1b5bcb27]{height:calc(80vh - 200px);width:100%}.bts-box[data-v-1b5bcb27]{position:absolute;left:50%;-webkit-transform:translateX(-50%);transform:translateX(-50%)}