AMP：Building Accelerated Mobile Pages
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Using custom CSS in AMP pages

We have seen that CSS is a key part of layout and design in AMP, as it is in HTML. In fact, AMP components come with built-in, default styles that are defined in a CSS file, amp.css, that's automatically included by the AMP library. For custom CSS styling in your AMP pages, there are restrictions on what you can do. You should already know that:

  • All styles must be defined in the <head> of the document; no in-line styles
  • A maximum of 50 KB of CSS is permitted
  • External stylesheets can't be used

There are also some further restrictions you should be aware of:

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