increase width of site from 980 to 1000

Hey guys,

I tried to increase the width of the site to 1000 and nothing really happened. I can see with Google Inspect Element that it is now 1000 but all the setting are still set to 980. The main and secondary columns are still formatted to 980. My site is here for reference.
The code I used is:

#page {
	max-width: 1000px;
}

Is there a way to make it format into 1000? Thanks for your help.