zoukankan      html  css  js  c++  java
  • 1像素边框问题

    有些屏幕是两倍屏,三倍屏

    写 1px 在两倍屏幕上对应的是两个物理像素

    vue项目中
    main 文件中
    import './assets/styles/border.css' (引用)

    css文件

    @charset "utf-8";
    .border,
    .border-top,
    .border-right,
    .border-bottom,
    .border-left,
    .border-topbottom,
    .border-rightleft,
    .border-topleft,
    .border-rightbottom,
    .border-topright,
    .border-bottomleft {
        position: relative;
    }
    .border::before,
    .border-top::before,
    .border-right::before,
    .border-bottom::before,
    .border-left::before,
    .border-topbottom::before,
    .border-topbottom::after,
    .border-rightleft::before,
    .border-rightleft::after,
    .border-topleft::before,
    .border-topleft::after,
    .border-rightbottom::before,
    .border-rightbottom::after,
    .border-topright::before,
    .border-topright::after,
    .border-bottomleft::before,
    .border-bottomleft::after {
        content: "020";
        overflow: hidden;
        position: absolute;
    }
    /* border
     * 因,边框是由伪元素区域遮盖在父级
     * 故,子级若有交互,需要对子级设置
     * 定位 及 z轴
     */
    .border::before {
        box-sizing: border-box;
        top: 0;
        left: 0;
        height: 100%;
        width: 100%;
        border: 1px solid #eaeaea;
        transform-origin: 0 0;
    }
    .border-top::before,
    .border-bottom::before,
    .border-topbottom::before,
    .border-topbottom::after,
    .border-topleft::before,
    .border-rightbottom::after,
    .border-topright::before,
    .border-bottomleft::before {
        left: 0;
        width: 100%;
        height: 1px;
    }
    .border-right::before,
    .border-left::before,
    .border-rightleft::before,
    .border-rightleft::after,
    .border-topleft::after,
    .border-rightbottom::before,
    .border-topright::after,
    .border-bottomleft::after {
        top: 0;
        width: 1px;
        height: 100%;
    }
    .border-top::before,
    .border-topbottom::before,
    .border-topleft::before,
    .border-topright::before {
        border-top: 1px solid #eaeaea;
        transform-origin: 0 0;
    }
    .border-right::before,
    .border-rightbottom::before,
    .border-rightleft::before,
    .border-topright::after {
        border-right: 1px solid #eaeaea;
        transform-origin: 100% 0;
    }
    .border-bottom::before,
    .border-topbottom::after,
    .border-rightbottom::after,
    .border-bottomleft::before {
        border-bottom: 1px solid #eaeaea;
        transform-origin: 0 100%;
    }
    .border-left::before,
    .border-topleft::after,
    .border-rightleft::after,
    .border-bottomleft::after {
        border-left: 1px solid #eaeaea;
        transform-origin: 0 0;
    }
    .border-top::before,
    .border-topbottom::before,
    .border-topleft::before,
    .border-topright::before {
        top: 0;
    }
    .border-right::before,
    .border-rightleft::after,
    .border-rightbottom::before,
    .border-topright::after {
        right: 0;
    }
    .border-bottom::before,
    .border-topbottom::after,
    .border-rightbottom::after,
    .border-bottomleft::after {
        bottom: 0;
    }
    .border-left::before,
    .border-rightleft::before,
    .border-topleft::after,
    .border-bottomleft::before {
        left: 0;
    }
    @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) {
        /* 默认值,无需重置 */
    }
    @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) {
        .border::before {
             200%;
            height: 200%;
            transform: scale(.5);
        }
        .border-top::before,
        .border-bottom::before,
        .border-topbottom::before,
        .border-topbottom::after,
        .border-topleft::before,
        .border-rightbottom::after,
        .border-topright::before,
        .border-bottomleft::before {
            transform: scaleY(.5);
        }
        .border-right::before,
        .border-left::before,
        .border-rightleft::before,
        .border-rightleft::after,
        .border-topleft::after,
        .border-rightbottom::before,
        .border-topright::after,
        .border-bottomleft::after {
            transform: scaleX(.5);
        }
    }
    @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) {
        .border::before {
             300%;
            height: 300%;
            transform: scale(.33333);
        }
        .border-top::before,
        .border-bottom::before,
        .border-topbottom::before,
        .border-topbottom::after,
        .border-topleft::before,
        .border-rightbottom::after,
        .border-topright::before,
        .border-bottomleft::before {
            transform: scaleY(.33333);
        }
        .border-right::before,
        .border-left::before,
        .border-rightleft::before,
        .border-rightleft::after,
        .border-topleft::after,
        .border-rightbottom::before,
        .border-topright::after,
        .border-bottomleft::after {
            transform: scaleX(.33333);
        }
    }
    有问题可直接留言,望各位与我都可以成为技术大牛。
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  • 原文地址:https://www.cnblogs.com/xhxdd/p/12133068.html
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