CI job logs: Collapsed sections could be highlighted more

CI job logs have the ability to collapse sections via gitlab-ci.yml. When such sections are collapsed, it is very easy to miss.

Why is this a problem ? When debugging failures, sometimes there's crucial information inside the collapsed section. Sometimes the error itself is in the collapsed section

Proposal

Have collapsed sections be more visually apparent

Maybe something like:

We can also take inspiration from https://en.wikipedia.org/wiki/Code_folding