CSS mobile version 1px (line/border) displays different thicknesses on different models, solution

Because different mobile phones have differentpixel densities. If the resolution of the mobile display is always 2 times that of the ordinary screen, the 1px border will be displayed as 2px on the mobile display with devicePixelRatio=2, so looking at 1px under the high-definition bottle always feels fatter

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no">
    <meta name="author" content="[email protected]">
    <title>移动端 1px(线条/边框) 解决方案</title>
    <style type="text/css">
        body{
            margin: 0;
            padding: 0;
            font-size: 14px;
            color: #333;
            font-family: 'Microsoft YaHei', 'Times New Roman', Times, serif;
        }
 
        /* 线条 */
        .list{
            margin: 0 20px;
            list-style: none;
            line-height: 42px;
            padding: 0;
        }
        .list>li{
            padding: 0;
            position: relative;
        }
        .list>li:not(:first-child):after{   /* CSS匹配非第一个直接子元素 */
            content: "";
            display: block;
            height: 0;
            border-top: #999 solid 1px;
            width: 100%;
            position: absolute;
            top: 0;
            right: 0;
            transform: scaleY(0.5); /* 将 1px 的线条缩小为原来的 50% */
        }
 
        /* 边框 */
        /* 
            其他作者可能会通过设置4个边的线条凑出边框线的效果，
            这样做不仅代码不够精简，而且调整圆角问题也会非常麻烦
        */
        .button{
            line-height: 42px;
            text-align: center;
            margin: 20px;
            background-color: #f8f8f8;
            position: relative;
            border-radius: 4px;
        }
        .button:after{
            content: "";
            position: absolute;
            top: -50%;
            right: -50%;
            bottom: -50%;
            left: -50%;
            border: 1px solid #999;
            transform: scale(0.5);
            transform-origin: 50% 50% 0;
            box-sizing: border-box;
            border-radius: 8px; /* 尺寸缩小 50%，即圆角半径设置为按钮的2倍 */
        }
    </style>
</head>
<body>
<ul class="list">
    <li>线条 1px</li>
    <li>xxxxxxx</li>
    <li>aaaaaa</li>
</ul>
<div class="button">边框 1px</div>
</body>
</html>

The solution comes from Langge’s blog respect!

CSS mobile 1px (line/border) solution_css mobile button thin border bottom: -50%;-CSDN Blog

CSS mobile version 1px (line/border) displays different thicknesses on different models, solution

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