# How to add margin inside a parbox?

I have create a parbox as below that I would like to have a margin between the border the text for top, bottom, left, and right:

\begin{center}\shadowbox{\parbox{0.85\textwidth}{text text text}}\end{center}


Can anyone enlighten me? Thanks!

The distance to the frame is controlled by \fboxsep. This can in fact be found in the documentation (PDF):
\documentclass{article}