.ts{
height: 108rpx;
width: 528rpx;
background: RGBA(46, 48, 61, 1);
border-radius: 8rpx;
position: absolute;
top: 50rpx;
left: 54rpx;
&::after {
content: '';
width: 0rpx;
height: 20rpx;
border-bottom: 20rpx solid RGBA(46, 48, 61, 1);
border-left: 20rpx solid transparent;
border-right: 20rpx solid transparent;
position: absolute;
top: -37rpx;
left: 368rpx;
}
}
ts为div元素,&::after为箭头