#+latex_header: \makeatletter\newenvironment{halfpageblock}{\begin{lrbox}{\@tempboxa}\begin{minipage}[t]{0.4\textwidth}}{\end{minipage}\end{lrbox}\fbox{\usebox{\@tempboxa}}}\makeatother

* Example of side by side boxes
This is some text that goes before the boxes.

#+begin_halfpageblock
Strengths:
- large
- simple
- green
#+end_halfpageblock
#+begin_halfpageblock
Opportunities:
- large audience
- no competition
#+end_halfpageblock

This is some text that goes after the boxes.