You are using Bootstrap syntax it seems but Bootstrap styles are not applied.
In Toolset > Settings > Bootstrap loading, you probably have set not to use Bootstrap3?
If you enable it, this should then work
Hi If I set:
The theme or another plugin is already loading Bootstrap 3.0
or
Toolset should load Bootstrap 3.0
Then the Menu on the page is not displayed correctly.
1. Toolset Layouts requires Bootstrap 3 - almost nothing will work without it
2. Toolset Views will require Bootstrap 3 for certain output style of search and loop, but not all
3. Toolset Forms can rely on Bootstrap 3 for its form rendering but also there, the required adjustments are minimal
4. What does your theme require? If it already ships Bootstrap you should display the Toolset Bootstrap Loading, and let the Theme load it.
==> If the Theme you use uses a "copy" of Bootstrap but altered it, then there are likely conflicts that can only be solved as in this example for DIVI: https://toolset.com/documentation/recommended-themes/toolset-divi-integration/matching-divi-styling-using-toolset/
According to what I see, your site is not using Bootstrap, it uses page builder syntax, could it be the theme came with a page builder (DIVI, likely)?
If so, could you consult above linked doc? With it you should be able to generate the solution if you use a DIVI child theme with the builder.