.head{ color:#fff; background-color: cornflowerblue; text-align: center; } .txv-video-slot{ width: 100%; height: 40px; line-height: 40px; font-size: 16px; color:white; background-color: black; opacity:0.3; } .videoWrap{ background-color: #ffffff; box-shadow: 0 0 10rpx 10rpx #dddddd; border-radius: 10rpx; overflow: hidden; margin-bottom: 20rpx; }