Tabs being rendered one below the other and not side by side

[hudsondiegof]

When I try to use tabs they are rendered one below the other and not side by side.

# Test

=== "Tab 1"
- test1
- test2
- test3

=== "Tab 2"
- test1
- test2
- test3

Output:

mkdocs.yml

[facelessuser]

Tabs, like admonitions, require the content to be indented 4 spaces under them.

[hudsondiegof]

thank you very much