Desktop Logo vs Mobile logo background

[Unboxit]

Hello,
Does anyone know if I need to separately edit my logo area background colour for mobile site because at present you can see that my desktop logo area background colour is a shade of black which i edited in the style.css file.

unboxit.com.au

However, when I load my website in mobile site mode, my logo area background colour is the original white background. And with my logo in png file format its looking rather out of place.

So, i am assuming there is a separate style.css file that controls mobile version of website?

[llegrand]

Try editing style.css (line 3970) 

logo img background:

[Unboxit]

Thanks llegrand !

Works perfectly