If you have a new site, you should consider switching to Weaver Xtreme. We are really not supporting Weaver II any more.
Within one HTML insertion area, the easiest way to get things organized is with float:left; and/or float:right; styling, plus specifying a width for each “box” as a percent so it will work responsively.
Just a little proofreading: you misspelled Boulder in your header image….