We should cleanup the markup of

* Some properties are surrounded by "'" others not:
<code class="property">propery-name</code>
<code class="property">'propery-name'</code>

Should be the same notation in the whole spec. How do we notate attribute names?

Should we always link to the section of the property if we use it?
<a href="#property-name"><code class="property">property-name</code></a>

* Same values of properties use the same notation as the property itself, but mostly surrounded by "'" sometimes without "'"
<code class="property">'overflow'</code>

But there are also examples like 'none' without extra markup or

<code style="css">'preserve-3d'</code>

How should values for attributes get marked?

* All headlines use "transformation function", while the text always usees "transform function". Can we harmonize the naming?

* Referencing terms: Should we reference the description of a term the first time we use it in the text or always? Like 'transformable element'
I found examples where terms were not linked to the description but are still italic.

* When do we use class 'css'? I found one example with
<code class="css">perspective(&lt;length&gt;)</code>
I expect that we use it on examples of the syntax?

* For some examples the CSS code is intended after the <style> tag, for others it is not. Do we always want to intend CSS source?

* Usage of <var>

Sometimes we have something like <var><length></var>, sometimes just &lt;length&gt; sometimes <i>&lt;length&gt;</i> and sometimes <em><tx></em> When should we use which notation?