Gray background for html5 video in FireFox
66088
Firefox, Chrome, Safari have grey background for MP4 HTML5 video
98669
Is there a way to use DRM on HTML5 video?
54951
How can I reflect a transparent background?
99321
Change background color for lightning:tab
61563
Alpha over layers but maintain environment background
119902
Create a multicolor background
142826
High contrast theme and Firefox-Font colour issues?
127270
How can I set an animated background?
42295
Firefox: Any way to specify white or black lists for the history tracker?
66800
Transparent Video Background
150520
background-color property doesn't work correctly with HTML5 DOCTYPE
39950
IE9 HTML5 video support
76470
How to change the Viewport background color?
112584
Background color doesn't work after float
9510
How do I get HTML5 h.264 Video working on Firefox?
32492
How do I create subtle background gradients like this?
75180
Black bar covering bottom half of images, with or without flash