Is it possible to have an ordered list inside an ordered list?

Question

What if I want it to make an ordered list like this:
1. Executive Board
1.1. CEO/President
1.2. Vice President
1.2.1. Administration
1.2.2. Operations
I can make lists like this in Word (but I don't know what it is called) so I'm curious if I can do the same with HTML.
Is there a way to make it look like this?

Answer 1

for 1.2.2. format, please use content: counters(section, ".") ". ";
https://code.sololearn.com/Wfco4w3k5Ezp/?ref=app

Answer 2

Ken Layug you mean like this???
https://code.sololearn.com/WbxO1T4dyMg5/?ref=app

Answer 3

Thanks but sorry. That's quite different.
The list I wanted is similar to how Wikipedia makes their table of contents in every article.
i.e. The Contents section in https://en.wikipedia.org/wiki/Physics
P.S. I don't think the Contents section is visible on the mobile page of Wikipedia, but you can always view it as a Desktop site

Answer 4

Yes you can