$zh-font-size: 12px !default;
$zh-green: #28a745 !default;
$zh-gray: #757575 !default;
$zh-muted: #6c757d !default;
$zh-light-gray: #bbb !default;
$zh-blue: #007bff !default;
$zh-red: #dc3545 !default;
$zh-yellow: #ffc170 !default;
$zh-white: #fff !default;
$zh-line-color: rgba(0,0,0,.125) !default;


// 实现0.5px的效果
@mixin zh-border {
  position: relative;
  &::after {
    content: ' ';
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    border-radius: inherit;
    pointer-events: none;
    box-sizing: border-box;
    z-index: 2;
  }
}