War And Precedence: Plugin positioning of unpositioned elements that aren’t yet positioned by later-loading stylesheets: A CSS Odyssey
So, I had a crazy problem. You'll notice that there's various draggable elements on this site... such as the "Kupietools" plugin tabs seen at left, the occasional "the site is being worked on right now" notices that pop up, etc. You can drag them around with your mouse.
This is done with a plugin (also available as a standalone javascript module, a few versions behind the plugin as I write this) that retrofits code onto various HTML elements by giving the plugin the classnames it needs to make interactive.
I was doing some optimization on the site loading to speed things up, such as getting WordPress to load a lot of CSS file late so as not to interfere with initial page load stats. (This is a whole art, beyond the scope of this article.)
Suddenly…

