🚀 go-pugleaf

Hi,

I'd like to translate a macro involving a \parbox into
an environment. Any idea ? I'd like to transform the following
\LaTeX code into a \begin{env}Here is a def\end{env}. Is this possible ?

Thank you in advance.

-------------
\documentclass{article}
\usepackage{color}
\usepackage{amsmath}
\usepackage[thmmarks,standard]{ntheorem}

\theoremstyle{break}
\newtheorem{defi}{Definition}

\begin{document}


\definecolor{mygrey}{gray}{0.90}
\definecolor{black}{gray}{0}

\noindent\fcolorbox{black}{mygrey}{\parbox{\linewidth}{%
\begin{defi}
Here is some definition
\end{defi}}}

\end{document}




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  Olivier MICHEL                           Email : michel@lri.fr 
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