vue-elem-stylus 的mixin用法

.tab

border-1px{red}

minxin

border-1px(&color)

position:relative
&::after
display:block
position:absolute
left:0
bottom:0

width:100%
border-top:1px solid $color
content:''

媒体查询解决1移动端像素问题

在添加1px的类加同级类.border-1px

@media (-webkit-min-device-pixel-ratio:1.5),(min-device-pixel-ratio:1.5)
.border-1px
&::after
-webkit-transform:scaleY(0.7)
transfom:scaleY(0.7)

@media (-webkit-min-device-pixel-ratio:2),(min-device-pixel-ratio:2)
.border-1px
&::after
-webkit-transform:scaleY(0.5)
transfom:scaleY(0.5)