How to Hide tags, Provide Margin in Mobile & Increase Questions text size in question page in Mobile

Hi,

I need the following answers

1. How to Hide tags
2. How to provide some margin for the question ( Means move the question below from the header menu) ( only for mobile )
3. How to Increase the Questions Size in Questions page ( only required in mobile view)

Note Point 2 & 3 changes required for mobile view only.