background color not changing in iPhone layout

[Jore]

I am trying to change the back ground color of the header....its working fine in the desktop layout....but its not working fine in the iphone lay out....the header color is not changing in the iphone lay out....providing my code belowhttp://jsfiddle.net/mzMjT/embedded/result/\[code\]<tr> <th style=" background-color: red;">First Name</th> <th>Last Name</th> <th>Job Title</th> <th>Favorite Color</th> <th>Wars or Trek?</th> <th>Porn Name</th> <th>Date of Birth</th> <th>Dream Vacation City</th> <th>GPA</th> <th>Arbitrary Data</th> </tr>th {background: #333;color: white;font-weight: bold;}\[/code\]