The titlesec package provides this functionality built-in.  Here's an example:

\documentclass{article}
\usepackage{titlesec}
\titleformat{\section}[frame]
{\normalfont} {} {5pt} {\Large\bfseries\filcenter\thesection.\quad}
\begin{document}
\section{A section}
\end{document}




If this isn't what you want, you should probably use the package in conjunction with mdframed to modify your sections anyway, since it provides a simple, yet powerful system for modifying all section headings.

Framing section headings
Basically I created 2 quads side by side and I added a road texture. I used transform.translate so that the road moves, but I am trying to make the road endless by making the 2 quads reposition themselves in front of the current quads repeatedly so that when I add a player the road is endless. Any way I could do this? 
