If I see Ubi as the publisher, I just skip it. Although it looks like I've either accidentally purchased one of their titles, or it was so cheap ($5) that I gave it a go.
RequestPolicy, likely all UserScripts (e.g. Greasemonkey and kin), LastPass (last I tested a week ago, was still non-functional).
Although Nightly with e10s enabled does at least appear to be working (better) with addons that only need to have input/listeners/control of the GUI.
It's likely the upper-end of the 2GB range, but still FF is unable to manage it's own memory usage.
/* Safari/Chrome, other WebKit */
/* Firefox, other Gecko */
Once someone has your account info you are screwed.
border: 1px solid black;
Where the total width is what you say it is: 21px. Instead we have the stupidity that the actual width is 32px. and paddings, margins et al ADD to the defined width instead of being a part of the element. Which makes calculating dimensions in HTML a fucking pain in the ass.