Help me decrease margins in Twenty Eleven Theme

I am using the Twenty Eleven theme and editing on a child theme.

Check out this web page and decrease the width of your browser.
https://investorweather.com/aapl/

Notice the white margins on the left and right on the page.
I want to decrease those by about 75% to have more room for content.

What in this code do I need to change to make that happen

#page {
	margin: 2em auto;
	max-width: none;
}
#branding hgroup {
	margin: 0 7.6%;
}
#access div {
	margin: 0 7.6%;
}
#primary {
	float: left;
	margin: 0 -26.4% 0 0;
	width: 100%;
}
#content {
	margin: 0 34% 0 7.6%;
	width: 60%
}
#secondary {
	float: right;
	margin-right: 7.6%;
	width: 18.8%;
}

I have been trying for hours and I am literally losing hair! Your help will be greatly appreciated.

Thanks