Prepare CSS section for Markdown conversion (#2307)

* Removes summary / seoSummary classes

* Remove div class=hidden and some notranslate

* Remove hidden paragraphs for live sample

* Remove hidden paragraphs for live sample - take 2

* Remove other hidden div and p - updated w/ en-US when necessary

* Remove ids

* Remove notranslate class

* Fix typo which broke build

* remove div class='index'

* remove useless <span style=...>

* remove non typographical sups

* remove non typographical subs

* remove blockindicator and fix some div.note

* fix build :/

* remove useless classes

* fix build - again :x

* fix unhandled elements 1/N + embedlivesample build fail

* fix div.warning

* Fix fixable flaws - hoping to reduce error conversion

* Remove unecessary images (same as en-US)

* fix div notes

* fix warnings

* fix some dl handling

* fix dls

* Fix a bunch of conversion errors

* rm unhandled figures

* Fix other set of issues and revamp easing-function page

* Fix some one-offs conversion errors (incl. deki files)

* fix the rest of one-off conversion issues

* Fix last dl standing

1 files changed, 3 insertions, 9 deletions

diff --git a/files/fr/web/css/mask-composite/index.html b/files/fr/web/css/mask-composite/index.html
index 19bb9fcd47..33b5bc3f26 100644
--- a/files/fr/web/css/mask-composite/index.html
+++ b/files/fr/web/css/mask-composite/index.html
@@ -51,7 +51,7 @@ mask-composite: unset;
 
 <h3 id="CSS">CSS</h3>
 
-<pre class="brush: css; highlight[7]">#masked {
+<pre class="brush: css">#masked {
   width: 100px;
   height: 100px;
   background-color: #8cffa0;
@@ -65,10 +65,7 @@ mask-composite: unset;
 }
 </pre>
 
-<div class="hidden">
-<h3 id="HTML">HTML</h3>
-
-<pre class="brush: html">&lt;div id="masked"&gt;
+<pre class="brush: html hidden">&lt;div id="masked"&gt;
 &lt;/div&gt;
 &lt;select id="compositeMode"&gt;
   &lt;option value="add"&gt;add&lt;/option&gt;
@@ -78,14 +75,11 @@ mask-composite: unset;
 &lt;/select&gt;
 </pre>
 
-<h3 id="JavaScript">JavaScript</h3>
-
-<pre class="brush: js">var clipBox = document.getElementById("compositeMode");
+<pre class="brush: js hidden">var clipBox = document.getElementById("compositeMode");
 clipBox.addEventListener("change", function (evt) {
   document.getElementById("masked").style.maskClip = evt.target.value;
 });
 </pre>
-</div>
 
 <p>{{EmbedLiveSample("Exemples", "200px", "200px")}}</p>