<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>一像素边框</title>
</head>
<style>
ul {
list-style: none;
margin: 0 auto;
padding: 0;
width: 980px;
}
li {
height: 50px;
line-height: 50px;
border: 1px solid #f00;
}
</style>
<body>
<ul>
<li>1</li>
<li>1</li>
<li>1</li>
<li>1</li>
<li>1</li>
<li>1</li>
</ul>
</body>
</html>
示例
相邻得两块之间 边框实际为两像素
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>一像素边框</title>
</head>
<style>
ul {
list-style: none;
margin: 0 auto;
padding: 0;
width: 980px;
}
li {
height: 50px;
line-height: 50px;
border: 1px solid #f00;
/* 添加代码 */
margin-bottom: -1px;
}
</style>
<body>
<ul>
<li>1</li>
<li>1</li>
<li>1</li>
<li>1</li>
<li>1</li>
<li>1</li>
</ul>
</body>
</html>
效果图：
最终效果图
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