Inline CSS And JavaScript Are Not Allowed
Document content represents text, no styling information (CSS) or
processing (JavaScript) should be included. These are meant for displaying
the content and will be added by whatever is used to display this page. Do not
complicate the work of the page renderer by adding CSS and JS directly in the
page.
Good Examples:
<h1>This is a title</h1>
Bad Examples:
<h1 style="font-weight:bold" class="main-header">This is a title</h1>