cover-view border-bottom 在真机不显示

微信小程序cover-view不支持设置单边的border,可以新增一个元素来模拟边框效果

<cover-view class='dialog-content'>12345上山打老虎！</cover-view>
<cover-view class="dialog-longline"></cover-view>

.dialog-longline {width: 100%;height: 2rpx;background-color:red;
}