floated each box to the correct side, swapped the divs in HTML to reorder the numbers.
Removed float so boxes displayed in block, used auto margins to move boxed to match comp.
Nested div2 inside of div1, increased size of div1 to 300px, added 50px margin to the top of div2.
Nested div2 within div1, adjusted top/left to 75px.
Put divs in reverse order, gave div3 an auto left-margin, and div 2 an auto margin.
Used a combination of margins and positioning commands to push the boxes to match the comp.