Sections used to be simple `<h2>s/`<h3>`s, but now are placed inside a `<div>`
with the `mw-heading` class, as shown below.

Language sections:

```html
<div class="mw-heading mw-heading2">
    <h2 id="English">English</h2>
    <!-- … -->
</div>
```

Etymology sections:

```html
<div class="mw-heading mw-heading3">
    <h3 id="Etymology_1">Etymology 1</h3>
    <!-- … -->
</div>
```

For completeness, translation sub-sections remain the same:

```html
<div class="NavFrame" id="Translations-challenge,_trial">
    <!-- … -->
</div>
```