====== Firefox: UserChrome ======

===== File Location =====

  - about:support
  - 'Profile Folder' >> OPEN
  - 'chrome' folder >> navigate
  - userChrome.css - edit with your custom CSS, save, and reload Firefox


===== CSS Samples =====
==== Inactive Tab Backgrounds ====
Changes the background color of inactive tabs so they aren't just random text floating on the ui. No idea why that's the default.

<code>
/* Inactive tab background color */
.tab-background:not([selected]) {
  background-color: #333b55 !important;
}

/* Active tab background color */
.tab-background[selected] {
  background-color: #ffffff !important;
}</code>