- 需求：h5开发的div 业务需求是底部添加0.5px的底纹
- 问题：android不现实0.5px
- 解决方案： 通过定位+伪类+缩放 实现
` .line { position: relative;
&:after {
content: " ";
position: absolute;
left: 0;
right: 0;
bottom: 0;
border-bottom: 1px solid $color-border;
transform: scaleY(0.5);
transform-origin: 0 100%;
}
&.line-transparent { &:after { border-bottom: 1px solid transparent; } } } `
