Decreasing content padding…

Hi,

I just need to decrease the width between content and left sidebar, I marked the area in red, in a screenshot:
https://www.informationmarketingexpert.com/Images/width-modify.jpg

Here’s site: https://www.informationmarketingexpert.com/test/

I placed css here so you can see: https://www.informationmarketingexpert.com/styletest.css

Can you give me the code to input, or edit in my css to decrease this “red” section I marked?

Thanks!