.worksBox { .comment_section { position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: 9999; background: rgba(0, 0, 0, .3); overflow: hidden; } .comment_close { position: absolute; bottom: 760rpx; right: 10rpx; font-size: 60rpx; padding: 20rpx; z-index: 999; } }