Actually just figured this out. Fairly easy w/ the following CSS modifications:
.home-feature-10 {
float:left;
width:48%;
margin:0 1.3% 0 0;
}
.home-feature-11 {
float:right;
width:48%;
margin:0 1.3% 0 0;
}
.home-feature-12 {
float:left;
width:48%;
margin:0 1.3% 0 0;
}
.home-feature-13 {
float:right;
width:48%;
margin:0 1.3% 0 0;
}
Probably will have to play w/ the iPhone/iPad section of the stylesheet to perfect, but this basically does the trick.