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Address some feedback for PEC #13

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Address some feedback for PEC #13

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29 changes: 18 additions & 11 deletions pec/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -34,30 +34,37 @@
<main>
<h1>Progressive Enhancement Class</h1>
<p>
Authors of HTML pages often assume JavaScript is supported and enabled in
the browser. While this is usually the case, there are situations in which
the client doesn't support or cannot enable it. When JavaScript is not
available the functionality that remains compared with the reference page
(with JS enabled) can be classified in the following classes:
Authors of HTML pages often assume features like JavaScript, CSS, and
embedded content are supported and enabled in the browser. While this is
usually the case, there are situations in which the client doesn't support or
cannot enable it. When non-HTML features are unavailable, the functionality
that remains compared with the reference page (with non-HTML enabled) can be
classified in the following classes:
</p>
<dl>
<dt>Class A</dt>
<dd>
All the essential and non-essential functionality works well.
It maintains a high degree of similarity with the reference page.
All the essential and non-essential functionality works well.
With JavaScript disabled, it maintains a high degree of similarity with
the reference page.
All content is available directly in the page's HTML; everything else
is optional or has an adequate fallback.
</dd>
<dt>Class B</dt>
<dd>
The important functionality works well, but some non-essential
functionality doesn't work.
There may be minor changes of similarity with the reference page.
The important functionality works well, but some non-essential
functionality doesn't work.
There may be minor changes of similarity with the reference page when
disabling JavaScript.
Some ancillary embedded content is missing from the HTML, without
adequate fallbacks.
</dd>
<dt>Class C</dt>
<dd>
Some important functionality is not available.
There may be important changes in similarity with the reference page.
</dd>
<dt>Class D</dt>
<dt>Class F</dt>
<dd>
The page shows an error, is unusable or doesn't load any content.
</dd>
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