Solved remove divi sidebar on the category page

Hi, I am sure this has been asked a million times before, my apologies for asking the million and 1th time!!

How do you move the sidebar on the divi theme. I am not talking about individual pages, that's easy but how do I turn off the side bar in the divi theme options?

Under Divi, Theme Options, Sidebar Layout I only have the option of right or left sidebar, not of fullpage.

I want full page - where do I do this?

link to one of the pages showing the sidebar. https://walg.org/category/roll-of-honour/

 

I am sorry - I found the css which works well, thank you @DavidGraham for asking the question before me!

#sidebar {
display: none !important;
}
#main-content .container:before {
display: none !important;
}
#left-area {
width: 100% !important;
padding: 0 !important;
}