Cant change width of template!!!

Iam trying to widen the template of my site at https://www.shulab.co.uk, to about the same width as https://www.topshop.co.uk. I've trid changing:

#mainWrapper {
background-color: #ffffff;
text-align: left;
width: 750px;
vertical-align: top;
border: 1px solid #9a9a9a;
To:
#mainWrapper {
background-color: #ffffff;
text-align: left;
width: 90%;
vertical-align: top;
border: 1px solid #9a9a9a;

I've tried changing the vale to another PX value and also in % but when i check the site, it just looks the same HELP!!!

Make sure that you are changing th file at includes/templates/custom/css/stylesheet.css

After you FTP it up to the server check that the date time changes - re-ftp to you local and check to see if your changes are actually in the file on the server

Also try clearing your browser cache

Yes its the correct file. I checked the modified date and time and everythings seems correct.

Just to clarify, the width can either can be entered as px or %?

Iam also using Zen Cart 1.3.8a

Your site displays 100% width for me (using both IE and Firefox).

I also tried it on both IE and Firefox and it dosent seem to made any diffrence.
Iam currently at work using the vodafone mobile broadband usb thing. Maybe thats why not currently displaying what you r seeing.

I'll check tonight on a proper home :huh: internet connection.