Just so that Theme Author understands what I’ve changed, I will post the edited css down below:
.mh-container { width: 1150px; margin: 0 auto; }
#main-content { width: 800px; float: left; margin-right: 40px; overflow: hidden; }
#main-sidebar { width: 300px; float: right; overflow: hidden; }
That is all. Just wanted to have wider container, content, and sidebar areas.
Thanks!