This is a follow up on my last question. I want a text block with (text width and outer shape) the same width as a beamer block but it doesn't work. The default definitioin of a beamer block is here. They use something like \begin{beamercolorbox}[colsep*=.75ex]{block title}
. But if I use this the box is not properly centered anymore.
\documentclass{beamer}
\usetheme{Berlin}
\usepackage{tikz}
\begin{document}
% as expected
\begin{frame}{Test}
\begin{block}{Test}
Test
\end{block}
\tikzstyle{myBox} = [draw=none, fill=green,
rectangle,inner sep=10pt,align=left,minimum width=\textwidth,text width=0.8\textwidth]
\begin{centering}
\begin{tikzpicture}
\node [myBox]{dsdsadsad kdjskdj sdksdk sdks dksjkdj skdjksdjksjdksjdksjdksjdksa fjdjf dkfjdkfjdkfj kdjfkdfjkdsjfkdjf};
\end{tikzpicture}%
\end{centering}
%
\begin{block}{Test}
Test
\end{block}
\end{frame}
\end{document}
My aim is to imitate the lower part of the beamer block. I use a tikz picture because I want to change transparency and other stuff.
I would like to avoid using additional packages. Is there a way to do it with TikZ? Maybe a beamercolorbox?