Goto the admin page and then click the 'Appearance' tab then from the left menu click 'Templates'
Search for the template called extra.css and find this code below which is at the top of the template:
#bpwrapper {
border: 1px solid #202020;
margin: 10px 25px 0px 25px;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
}
Change the above code to this:
#bpwrapper {
width: 1000px;
border: 1px solid #202020;
margin: 10px auto 0px auto;
-moz-border-radius: 7px;
-webkit-border-radius: 7px;
border-radius: 7px;
}
Change width: 1000px; to the width you would like to use.
















