Several visualization problem – CSS Fix

Hello,
I’m building a new website and I installed Anspressfor the first time. The plugin seems to work fine but I noticed several visualization problems that make the plugin unusable.
You can visualize these errors here: https://hiris.io/question-and-answer/
– Avatar image are not resizing
– The search bar, filters and buttons panel do not seem to be displayed properly in the desktop version and are unusable in the mobile version
– On the question pages titles of the questions are not showing up and the avatar resize properly only on the mobile visualization
– On the ask page the button to post the question is invisible

Now, I don’t understand if these problems are caused by some conflicts with the WP theme (Salient 8.0.15), by wrong settings, if I had to implement some custom css to solve this or if I had to buy your theme for anspress to obtain a responsive and maintainable version (without custom modification).

In this last case, can you assure me that the AskBug theme work smoothly with Salient?

Thank you for your time,

Luca

PS: I’m using Ultimate Manager to manage profiles. At this moment if an user doesn’t set his avatar image UM assign a gravatar image.