How to make my page content full width

Hello,

I am trying to work with the base template and the page content covers only about 70% of the actual page making it seem like it has a huge padding on the right for now reason. I inspected the element and I tried changing the page content to full width in different ways with CSS to no avail. How can I adjust  my page content width without getting a headache over it?

Never mind I figured it out. I was adjusting the wrong class and I found the class for the base template which was .site-container.