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  • 编写移动端高清屏页面的1px边框和线

    直接上代码

    .out {
            border: solid 1px #000;
            padding: 1rem;
        }
    
        .inner {
            position: relative;
            margin-bottom: 1rem;
            padding: 1rem;
        }
        .m-t{
            margin-top: 1rem;
        }
        .m-t-o{
            border:none;
            border-bottom:1px solid rgb(221,221,221);
            height:1px;
            -webkit-transform: scaleY(0.5);
            -webkit-transform-origin:0 0;
        }
        @media screen and (-webkit-min-device-pixel-ratio: 2){
            .one:before {
                position: absolute;
                top: 4.4rem;
                left: 0;
                width: 100%;
                height: 1px;
                -webkit-transform: scale(1,.5);
                transform: scale(1,.5);
                -webkit-transform-origin: 0 0;
                transform-origin: 0 0;
                content: '';
                border-top: 1px solid #ddd;
            }
    
            .t:before {
                position: absolute;
                top: 0;
                left: 0;
                width: 100%;
                height: 1px;
                -webkit-transform: scale(1,.5);
                transform: scale(1,.5);
                -webkit-transform-origin: 0 0;
                transform-origin: 0 0;
                content: '';
                border-top: 1px solid #ddd;
            }
            .l:before {
                position: absolute;
                top: 0;
                left: 0;
                width: 1px;
                height: 100%;
                -webkit-transform: scale(.5,1);
                transform: scale(.5,1);
                -webkit-transform-origin: 0 0;
                transform-origin: 0 0;
                content: '';
                border-left: 1px solid #ddd;
            }
            .r:before {
                position: absolute;
                top: 0;
                right: 0;
                width: 1px;
                height: 100%;
                -webkit-transform: scale(.5,1);
                transform: scale(.5,1);
                -webkit-transform-origin: 0 0;
                transform-origin: 0 0;
                content: '';
                border-right: 1px solid #ddd;
                z-index: 1;
            }
            .b:after {
                position: absolute;
                bottom: -1px;
                left: 0;
                width: 100%;
                height: 1px;
                -webkit-transform: scale(1,.5);
                transform: scale(1,.5);
                -webkit-transform-origin: 0 0;
                transform-origin: 0 0;
                content: '';
                border-bottom: 1px solid #ddd;
            }
    
            .all:before {
                border: 1px solid #ddd;
                -webkit-border-radius: 4px;
                border-radius: 4px;
                width: 200%;
                height: 200%;
                position: absolute;
                top: 0;
                left: 0;
                -webkit-transform: scale(.5);
                transform: scale(.5);
                pointer-events: none;
                -webkit-transform-origin: 0 0;
                transform-origin: 0 0;
                content: '';
            }
        }
    <body>
    <div class="out">
    
        <h2 class="one">测试的一行文字</h2>
        <div class="out">
            <div class="inner t">上边框</div>
            <div class="inner l">左边框</div>
            <div class="inner r">右边框</div>
            <div class="inner b">下边框</div>
            <div class="inner all">边框</div>
        </div>
    </div>
    
    <div class="out m-t">
        测试的另一行文字
        <hr class="m-t-o"></hr>
    </div>
    </body>

    一种方法是
    给div添加 position: relative;

    再添加相对应的伪类

    另一种方法是
    把hr绘制成一像素的横线,hr样式如下

    {
            border:none;
            border-bottom:1px solid rgb(221,221,221);
            height:1px;
            -webkit-transform: scaleY(0.5);
            -webkit-transform-origin:0 0;
        }

    效果图:放大还是能看出一像素处理后和没处理的区别



    github地址:https://github.com/fengnovo/diary/tree/master/react/20161017
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  • 原文地址:https://www.cnblogs.com/fengnovo/p/5969982.html
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