.clearfix:after { content: '020'; display: block; height: 0; clear: both; visibility: hidden; } .clearfix { /* 触发 hasLayout */ zoom: 1; } .scroll::-webkit-scrollbar { width: 0; height: 0; color: transparent; } .extend-via-pseudo-elem { position: relative; overflow: visible; &::before { content: ''; position: absolute; top: -20rpx; right: -20rpx; bottom: -20rpx; left: -20rpx; } } view { word-break: break-all; }