Code: Select all
\framebox[\textwidth][l]{
\begin{minipage}{\textwidth}
Lorem ipsum
$$ x=1$$
Lorem ipsum
\end{minipage}
}

Code: Select all
\framebox[\textwidth][l]{
\begin{minipage}{\textwidth}
Lorem ipsum
$$ x=1$$
Lorem ipsum
\end{minipage}
}
NEW: TikZ book now 40% off at Amazon.com for a short time.