position: absolute
我认为在伪元素的上下文中也有一个应用程序:before
。试试这个,看看它是否能给你你想要的东西:
<html>
<head>
<title>Lorem Ipsum</title>
<style>
.allowLeftMargin
{
margin-left: 5em;
}
.highlightThis
{
background-color: yellow;
}
.highlightThis:before
{
background-color: yellow;
content: "Note";
padding-left: 0.25em;
padding-right: 0.25em;
position: absolute;
left: 1em;
}
</style>
</head>
<body>
<div class="allowLeftMargin">
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna
aliqua. Ut enim ad minim veniam, quis nostrud exercitation
ullamco laboris nisi ut aliquip ex ea commodo consequat.
Duis aute irure dolor in reprehenderit in voluptate velit
esse cillum dolore eu fugiat nulla pariatur.
<span class="highlightThis">Excepteur sint occaecat</span>
cupidatat non proident, sunt in culpa qui officia deserunt
mollit anim id est laborum.</p>
</div>
</body>
</html>
您可以快速调整浏览器窗口的大小,以确认音符随着突出显示的跨度移动。