A responsive design requires an intentionally responsive template and content design. 

If you are not sure if your site is Responsive you can check it.  If your site is responsive it will shrink and grow as you resize your browser window.  A repsonsive site will NEVER need to scroll right and left, only up and down. 

You can see different resolutions for your site here http://www.responsinator.com/

When making changes to your responsive design here are some basic rules to follow.

-  Any fixed sizes larger than 320 will cause viewport issues - potentially causing compliance issues. (it is best to use percentages and not fixed sizes)
-  Frames should not have fixed sizes larger than 320 px.
-  Side by side frames will wrap automatically when the width of them is wider than the device width.
-  In general, it's not a good idea to have more than two frames side by side.