css - Using multiple-class selectors in IE7 and IE8

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css - Using multiple-class selectors in IE7 and IE8

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

css - Using multiple-class selectors in IE7 and IE8

I know IE7 & IE8 supposedly have support for using multiple CSS class selectors, but I can't seem to get it to work.

CSS:

.column {
  float: left;
  display: block;
  margin-right: 20px;
  width: 60px;
}
.two.column {
  width: 140px;
}
.three.column {
  width: 220px;
}
.four.column {
  width: 300px;
}

HTML:

<div class='two column'>Two Columns</div>
<div class='three column'>Three Columns</div>
<div class='four column'>Four Columns</div>

It always end up using the .four.column rule. Any ideas on what I'm doing wrong?

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1 Answer

深蓝 · Answer 1 · 2021-10-23T19:27:33+0000

You want to make sure and use a doc type so you do not render in quirks mode. For example:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Test Page</title>
<style type="text/css">
.column {
  float: left;
  display: block;
  margin-right: 20px;
  width: 60px;
  border: 1px solid;
}
.two.column {
  width: 140px;
}
.three.column {
  width: 220px;
}
.four.column {
  width: 300px;
}
</style>
</head>
<body>
<div class="two column">Two Columns</div>
<div class="three column">Three Columns</div>
<div class="four column">Four Columns</div>
</body>
</html>

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css - Using multiple-class selectors in IE7 and IE8

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