{% add_stylesheet %}

Use this tag to add a stylesheet to the document head of the current page
Syntax: {% add_stylesheet "URL"|Guid|"Name" %}

All stylesheets added using this syntax will only be included in the document once, regardless of how many times they are added. This makes it safe to include stylesheets in sub-templates that may be included multiple times in a page.

This tag requires the "{{ HeaderTags }}" object to be present in the document head.

In order to add a stylesheet using the "URL", you must use a fully-qualified URL, incuding the leading "http://" or "https://".