[Sanjip Shah]

@Victoria If this is just for this one page, in the dashboard, go to Appearance->Theme Options->Design Options Tab->Custom CSS. Paste the following css and click on ‘Save all Changes’. Hope this helps.

.page-id-191 #primary {
    width: 82.64%;
}
.page-id-191 #secondary {
    margin-left: 5.06%;
    width: 12.28%;
}