Thread: How do I change CSS for specific page?

How do I change CSS for specific page?

I have a specific page set up for the home page in Settings. I'd like to control the width of the block it is displayed in. If I change .content_left (by way of child theme style.css) it is a global change and effects all pages.

Is a job for a HOOK? If so - what hook would it be? I've tried a number of them can't affect that page's shadowblock size.
I'm hoping to get the home page to have 3 roughly equal areas. I guessing this would be content_left, content_right and sidebar. But I don't want to change those for the whole site - just the home page.

Any ideas?

=Alan R/