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我有一个包含表格的 html 文件。
<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<link rel='stylesheet' href='https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css'>
<style media="screen">
body {font-size: 120%;}
td, th {text-align: center;}
.stickyth th {position: sticky; top: -1px; background: #ccc; z-index: 3;}
.col5-out {position: relative; z-index: 2;}
.col5-inner {background-image: linear-gradient(135deg, #6303B1, #ff0099); max-width: 25%; left: -22px; border-radius: 25%; transform: rotate(-23deg); top: -11px; position: absolute;}
.col5-content {font-size: 75%; padding: 1px 6px;}
</style>
</head>
<body>
<table class="table table-bordered table-striped table-hover">
<tr class="stickyth">
<th>column 1</th>
<th>column 2</th>
<th>column 3</th>
<th>column 4</th>
<th>column 5</th>
<th>column 6</th>
<th>column 7</th>
<th>column 8</th>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
</table>
</body>
</html><tr>具有 css 属性的元素
position:sticky; (表格的第一行)，另一个
<tr>标签是示例行(这些行中的每个单元格中都有“一些文本”文本)。
<tr> 的每个单元格添加了类似紫色标签的内容。标签，而不是表格的第一行。
z-index: 3;对于第一行，紫色标签在表格边框所在的位置可见(参见第二张图片)。
z-index 的号码属性，甚至添加 z-index文件中其他相关元素的数字较低.stickyth而不是 .stickyth th在 style文件顶部的标签div第一行和紫色标签中的标签。最佳答案
这似乎有点奇怪，但似乎正在发生的是，即使元素本身位于已卡住的粘性元素中，边框也会滚动。
这个片段做了一个稍微有点麻烦的解决方法 - 在每个 th 上放置一个左侧边框，它具有浅灰色。如果你把它放在 5 号，它往往看起来与其他的略有不同，所以这使得它们都是一样的。
after 伪元素不会滚动，因此紫色位位于 OK 下方。
tr.stickyth th:nth-of-type(n)::before {
content: '';
position: absolute;
width: 0.5px;
height: 100%;
top: 0;
left: -1px;
background-color: #eeeeee;
}<!DOCTYPE html>
<html lang="en" dir="ltr">
<head>
<link rel='stylesheet' href='https://maxcdn.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css'>
<style media="screen">
body {font-size: 120%;}
td, th {text-align: center;}
.stickyth th {position: sticky; top: -1px; background: #ccc; z-index: 3;}
.col5-out {position: relative; z-index: 2;}
.col5-inner {background-image: linear-gradient(135deg, #6303B1, #ff0099); max-width: 25%; left: -22px; border-radius: 25%; transform: rotate(-23deg); top: -11px; position: absolute;}
.col5-content {font-size: 75%; padding: 1px 6px;}
</style>
</head>
<body>
<table class="table table-bordered table-striped table-hover">
<tr class="stickyth">
<th>column 1</th>
<th>column 2</th>
<th>column 3</th>
<th>column 4</th>
<th>column 5</th>
<th>column 6</th>
<th>column 7</th>
<th>column 8</th>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
<tr class="not-sticky">
<td>some text 1</td><td>some text 2</td><td>some text 3</td><td>some text 4</td>
<td><div class="col5-out">some text 5<div class="col5-inner"><div class="col5-content">tinytext</div></div></div></td>
<td>some text 6</td><td>some text 7</td><td>some text 8</td>
</tr>
</table>
</body>
</html>关于html - 如何使 z-index 属性在表格边框上工作，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/68500223/
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