cover-view 设置透明边框失效
<cover-view class="square"></cover-view>
.square{
position: absolute;
bottom: -18rpx;
left: 41.5%;
z-index: 9999;
border: 18rpx solid ;
border-top-color: #003BAE;
border-bottom-color: transparent;
border-left-color: transparent;
border-right-color: transparent;
}
