巧用transform: scale()

巧用transform: scale()

移动端font-size小于12px时line-height问题

由于出现的场景是字体小于12px的时候，所以可以将原来包括 font-size 在内的属性放大两倍，再用 scale 缩小一倍

<p>标签</p>

<style>
  p{
    font-size:20px;
    transform: scale(0.5);
    }
</style>

手机端1px问题

 p::before {
    position: absolute;
    top: 0;
    content: ' ';
     100%;
    height: 2rpx;
    background-color: #dee0e3;
    transform: scaleY(0.5);
 }

手机端边框1px

/*单条border样式*/
@mixin border-1px ($color, $direction) {
  content: '';
  position: absolute;
  background: $color;
  @if $direction == left {
    left: 0;
    top: 0;
    height: 100%;
     2px;
    transform: scaleX(0.5);
    transform-origin: left 0;
  }
  @if $direction == right {
    right: 0;
    top: 0;
    height: 100%;
     2px;
    transform: scaleX(0.5);
    transform-origin: right 0;
  }
  @if $direction == bottom {
    bottom: 0;
    left: 0;
     100%;
    height: 2px;
    transform: scaleY(0.5);
    transform-origin: 0 bottom;
  }
  @if $direction == top {
    top: 0;
    left: 0;
     100%;
    height: 2px;
    transform: scaleY(0.5);
    transform-origin: 0 top;
  }
}

/*四条border样式*/
@mixin all-border-1px ($color, $radius) {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  border: 2px solid $color;
  border-radius: $radius * 2;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
   200%;
  height: 200%;
  -webkit-transform: scale(0.5);
  transform: scale(0.5);
  -webkit-transform-origin: left top;
  transform-origin: left top;
}

总结

巧用transform: scale()可以处理所有1px问题