Sub categories not displayed mobile devies

[MRTR-88]

Hi all,

In our new installation on TH 1.0 with transformer theme 3.4, we have that on any mobile device the subcategories menu (left column) is not displayed.
On normal devices like laptop or computer, this menu is displayed again.

We have edited the max-width in the css file from 1200 px to 85% , and the container from 1170px to also 85% width.
The given file for this was responsive-1.css.

If we turn of the responsive theme in the theme settings, the problem is solved, but this changed the width of the content also , back to the 1200px.

Does someone has an idea how we can display the menu also on mobile devices?

thanx!