Solution: Non-working line numbers in Bootstrap accordion panel

[Peter Tröger]

 I had the situation that line numbers did not show up when putting the <pre>...</pre> block into a Bootstrap accordion:

<div id="collapse0" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="heading0">
     <div class="panel-body">
          <pre class="prettyprint linenums">...</pre>
     </div>
</div>

The solution is to add a list-style-position argument in the CSS (see also here):
 
<style>
li.L0, li.L1, li.L2, li.L3, li.L4, li.L5, li.L6, li.L7, li.L8, li.L9 {
  list-style-type: decimal !important;
  list-style-position: inside;
}
</style>