Is your feature request related to a problem? Please describe.

While completing the tabindex lesson, I noticed two lines (quoted below) that can seem contradictory despite not being so. Currently, there is a lack of clear reasoning regarding why it's bad practice to use values greater than 0 for the tabindex attribute.

It takes a numerical value, which can be positive, zero, or negative.

It's important to never use the tabindex attribute with a value greater than 0.

Describe the solution you'd like

I would like to see more detailed explanation as to why it's considered bad practice to use values greater than 0 for the tabindex attribute.

Consider making curriculum answer this question:

If it's possible to use values greater than 0 for the tabindex attribute, why is it important for web developers to not do that?

Here's a resource I found that discusses the topic in more depth:
https://karlgroves.com/why-using-tabindex-values-greater-than-0-is-bad

There are plenty of other resources available to use as reference.

Describe alternatives you've considered

I have not considered alternatives.

Additional context