1.sass
1 @charset "utf-8"; 2 /** 3 * @module 背景与边框 4 * @description 为元素添加边框（包括1px边框） 5 * @method border 6 * @version 2.0.0 7 * @param {String} $border-width 指定边框厚度（单位为px），默认值：1px，取值与`border-width`属性一致，不同方向代表边框位置 <2.0.0> 8 * @param {String} $border-color 指定边框颜色 <2.0.0> 9 * @param {String} $border-style 指定边框样式 <2.0.0> 10 * @param {String} $radius 指定边框圆角半径，默认值：null <2.0.0> 11 */ 12 @mixin border($border-width: 1px, $border-color: map-get($base, border-color), $border-style: solid, $radius: null) { 13 // 为边框位置提供定位参考 14 position: relative; 15 @if $border-width == null { 16 $border-width: 0; 17 } 18 border-radius: $radius; 19 &::after { 20 // 用以解决边框layer遮盖内容 21 pointer-events: none; 22 position: absolute; 23 z-index: 999; 24 top: 0; 25 left: 0; 26 // fix当元素宽度出现小数时，边框可能显示不全的问题 27 // overflow: hidden; 28 content: "\0020"; 29 border-color: $border-color; 30 border-style: $border-style; 31 border-width: $border-width; 32 // 适配dpr进行缩放 33 @include responsive(retina1x) { 34 width: 100%; 35 height: 100%; 36 @if $radius != null { 37 border-radius: $radius; 38 } 39 } 40 @include responsive(retina2x) { 41 width: 200%; 42 height: 200%; 43 @include transform(scale(.5)); 44 @if $radius != null { 45 border-radius: $radius * 2; 46 } 47 } 48 @include responsive(retina3x) { 49 width: 300%; 50 height: 300%; 51 @include transform(scale(.33333)); 52 @if $radius != null { 53 border-radius: $radius * 3; 54 } 55 } 56 @include transform-origin(0 0); 57 } 58 } 2.stylus
border($border-width = 1px, $border-color = #ccc, $border-style = solid, $radius = 0) // 为边框位置提供定位参考 position: relative; if $border-width == null $border-width: 0; border-radius: $radius; &::after // 用以解决边框layer遮盖内容 pointer-events: none; position: absolute; z-index: 999; top: 0; left: 0; // fix当元素宽度出现小数时，边框可能显示不全的问题 // overflow: hidden; content: "\0020"; border-color: $border-color; border-style: $border-style; border-width: $border-width; // 适配dpr进行缩放 @media (max--moz-device-pixel-ratio: 1.49), (-webkit-max-device-pixel-ratio: 1.49), (max-device-pixel-ratio: 1.49), (max-resolution: 143dpi), (max-resolution: 1.49dppx) width: 100%; height: 100%; if $radius != null { border-radius: $radius; } @media (min--moz-device-pixel-ratio: 1.5) and (max--moz-device-pixel-ratio: 2.49), (-webkit-min-device-pixel-ratio: 1.5) and (-webkit-max-device-pixel-ratio: 2.49),(min-device-pixel-ratio: 1.5) and (max-device-pixel-ratio: 2.49),(min-resolution: 144dpi) and (max-resolution: 239dpi),(min-resolution: 1.5dppx) and (max-resolution: 2.49dppx) width: 200%; height: 200%; transform: scale(.5) if $radius != null { border-radius: $radius * 2; } @media (min--moz-device-pixel-ratio: 2.5), (-webkit-min-device-pixel-ratio: 2.5),(min-device-pixel-ratio: 2.5), (min-resolution: 240dpi),(min-resolution: 2.5dppx) width: 300%; height: 300%; transform: scale(.33333) if $radius != null { border-radius: $radius * 3; } transform-origin: 0 0;