How can I add external css styles in amp page. This tag I am using to include css file.
<link href="css/cssnew.css" rel="stylesheet" media="screen">
Its giving the following error: The attribute 'href' in tag 'link rel=stylesheet for fonts' is set to the invalid value 'css/cssnew.css'. (see https://www.ampproject.org/docs/reference/spec#custom-fonts)
In amp documentation it specifies to use inline styling.
<style amp-custom>
//css code
</style>
But how to include all the required css inside this tag since it has certain limits. Can anybody explain me regarding this with an example as I am completely new to amp pages. Thank you in advance