DRAG DROP
You are creating an application by using HTML5 and CSS3. The styles for the pages are
derived from five style sheets.
The styles are not being applied correctly to the pages in the application.
You need to apply the styles from highest priority to lowest priority.
In which order should you use the five style sheets? (To answer, move the style sheet types
from the list of style sheet types to the answer area and arrange them in the correct order.)
Answer: 
Explanation:
http://www.w3.org/TR/CSS21/cascade.html
From highest priority to lowest priority.
User important style sheets
Author important style sheets
Author normal style sheets
User normal style sheets
User agent style sheets
It is pretty clear in this article: http://www.quora.com/In-what-order-do-CSS-definitions-takepriority
CSS declarations are applied in this order (from lowest to highest priority):
· User agent declarations (the default styles your browser applies to elements)
· User normal declarations (a user’s own stylesheet if they’re using one)
· Author normal declarations (this is your normal stylesheet)
· Author important declarations (anything your mark important)
· User important declarations (any important styles from the user’s stylesheet)
Most important to least important
user – Imp
author – Imp
author – Norm
user – Norm
user – Agent
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Style sheets may have three different origins: author, user, and user agent.
Author. The author specifies style sheets for a source document according to the conventions of the document language. For instance, in HTML, style sheets may be included in the document or linked externally.
User: The user may be able to specify style information for a particular document. For example, the user may specify a file that contains a style sheet or the user agent may provide an interface that generates a user style sheet (or behaves as if it did).
User agent: Conforming user agents must apply a default style sheet (or behave as if they did). A user agent’s default style sheet should present the elements of the document language in ways that satisfy general presentation expectations for the document language (e.g., for visual browsers, the EM element in HTML is presented using an italic font). See A sample style sheet for HTML for a recommended default style sheet for HTML documents.
By default, rules in author style sheets have more weight than rules in user style sheets. Precedence is reversed, however, for “!important” rules. All user and author rules have more weight than rules in the UA’s default style sheet.
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