<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <title>CSS Test: Case-sensitivity of At-rules (@media)</title> <link rel="author" title="L. David Baron" href="http://dbaron.org/"> <link rel="help" href="http://www.w3.org/TR/CSS21/syndata.html#characters"> <style type="text/css"> p { color: white; } @media all { p { background: url(support/swatch-red.png); } } @MeDIa aLL { p { BacKgrOUNd: UrL(support/swatch-green.png); } } </style> </head> <body> <p>This should have a green background.</p> </body> </html>