Hi I'm new to SP 2010, picking up a site someone else customized.
I opened the site's master page then followed the link to the css section to change.
Saved the change and the page looked fine. But, I went back to make another change and the original change was overwritten!
This is only 1 site, 1 master page, but i noticed something weird - there are multiple core.css files in the top-level site, all in weird randomly named folders in {top-level site}/_catalogs/theme/themed/1386CE2C/corev4-80A8FAC2.css
I'm only familiar with SP 2007 customization, so I'm not quite sure what's going on here.
Can someone try to explain or point me to a link that will help? thanks!