Changes to css in theme not showing up

So I go to Appearance>Themes and the theme I purchased is listed there, along with other themes I could choose. On this page, I click on the Customize button for my theme and am brought to a new page that shows what my blog currently looks like with the them, along with a sidebar on the right for editing the theme. I click on the CSS link in this sidebar and am given an area to add css. I add some simple css (I change the color of some text) and the change is immediately visible to the left of that sidebar. I click on the Save button and the sidebar says “Your design has been published!”.

Well after all of this, I view my site and the changes I made to the css are not visible there. I even tried viewing the site in a different browser and pressing ctrl+f5 numerous times. The last thing I tried is to just wait. It has been over an hour now, however, and my site as seen by the public does not have the css changes. When I go to edit the css again, however, the changes are visible there.

If it matters, I am using a premium theme called Arcade.