CSS content property not displaying_问答_开发者

开发者 https://www.devze.com 2023-03-21 11:20 出处：网络

I am new to CSS and I\'m following a book example: Iv\'e copied the following from the book and saved it as HTML.

相关专题：css

I am new to CSS and I'm following a book example:

Iv'e copied the following from the book and saved it as HTML. all the css properties seem to work except the "content" property which does not display.Thanks in advance.

<!DO开发者_如何转开发CTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
    <head>
        <title> The content property </title>
        <style type='text/css' media='all'>
            div {
                content: "Hello, world!";
            }
        </style>
    </head>
    <body>
        <div></div>
    </body>
</html>

content is used with :before or :after like so:

div:after
{
    content: "Hello, world!";
}

Regardless, I've only used content for special cases (to clear floated elements, for example). I've never actually used this to insert content. You generally want to separate content and presentation anyway, so I think this is a bad idea. Which book are you reading? :)

The content property only applies to CSS pseudo-elements such as :before and :after.

You cannot use it to set the content of an arbitrary element.

The content property only works for :before and :after to prepend or append content to said nodes, like so:

.email-address:before {
  content : "Email address: ";
}

<ul>
  <li class="email-address">myemail@gmail.com</li>
</ul>

The output would be

• Email address: myemail@gmail.com

CSS content property not displaying

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