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I've read mixed things about this, so I'm hoping to get it sorted definitively.
If I have SVG markup that is inline within an HTML document, and I am styling it with CSS, do I need to wrap that CSS in commented out CDATA?
Example:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
</head>
<body>
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 512 512">
<style type="text/css">
/* <![CDATA[ */
.some_styles {}
/* ]]> */
</style>
<!-- SVG content here -->
</svg>
</body>
</html>
I imagine there could be issues like the CSS child combinator being misinterpreted as an XML closing bracket, and I have read various posts from people advising using commented out CDATA around inline SVG styles 12. However, to my surprise I found that even with CDATA removed and the child combinator being used, my HTML validated. In addition to this, I was unable to detect any problems with the rendering of the SVG in any modern browser.
Here's what has been discussed on SE about including CDATA within a <script> tag, but that's not the same thing as <svg>, so it seemed this warranted its own question.
I don't mind including it, and doing so doesn't cause any trouble. I just wonder if I'm doing the right thing or something unnecessary.
625
In theory CDATA blocks are required anywhere you'd want to write unescaped text. In XML, only 2 characters need escaping: < and & and both characters are meaningless in CSS.
That means you don't need CDATA blocks for CSS.
(Also, you don't need CDATA in HTML because HTML is not XML).
70
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