Can DW use CSS classes when <link> not on current page?

The CSS is included in the top level of the templates which are inherited by the site when it renders, however the source code for each twig file does not include it.  So in order to have DW "know" that the css classes are available to me I need to keep remembering to copy/paste the links to the css while I'm editing and then deleting them once I'm done else multiple references to the css will appear in the rendered code.

For instance a page I have open right now has the below code which is the starting block for the user profile page where I need to put the form in. The app_public_template.twig file renders the css for the site as well as the main template information and in order for my dreamweaver to autocomplete the classes while working on this file I need to include a <link> temporarily to the css and then remember after I'm done to delete it.  Later if I need to make an update, I once again need to remember to put and remove the <link> or alternatively I put in a "Never run this" if/end statement around the code so that  it's always there but never renders to the client but then it's leaving confusing junk behind for other developers many of which aren't using dreamweaver and don't get why I would leave this code behind for them.  I've exampled that method below and bolded it in red. Optimally I would like to have this not be required but instead tell DW "By default always use these classes as options for autocompletion even if the CSS is not linked."

{% extends 'layouts/app_public_template.twig' %}

{% block title %}User profile for {{user}}{% endblock %}

{% block content %}

  <div class="row">

  </div>

{% if 1==2 %}<link rel="stylesheet" href="/css/bootstrap.min.css">{% endif %}

{% endblock %}