The first accordion in "Brief intro to the command line" renders bad

[mcagl]

Issue description

The link is this: https://tutorial.djangogirls.org/en/installation/#intro-command-line

All the content for "Opening: Windows" is outside of the accordion, but looking at the source code it is expected to render inside the accordion.

I tried to understand why, and I did these experiments:

• I added another <sec data-title=... content, containing a <ul>, and then this new one renders badly, and the pre-existing "Windows" one renders good.
• I removed the "dummy" section, and added only a <!endsec--> before the "Windows" section, and then it rendered good

It seems that above this section there is a non-closed section, but it's not the case (at least to my eyes).

I don't know how to solve this.

Language

I looked at the english version

Operating system

It's not related to one operating system

Screenshots

This is the bad render:

This is the good render: