I want to have a list of items on a beamer slid which should appear one by one. For each item, I want to have a separate explanation block which should only be visible as the item appears. What I have is this code:
\begin{frame}
\begin{itemize}
\item<1-> Foo
\item<2-> Bar
\item<3-> Bla
\end{itemize}
\begin{block}{About Foo}<1>
...
\end{block}
\begin{block}{About Bar}<2>
...
\end{block}
\begin{block}{About Bla}<3>
...
\end{block}
\end{frame}
This does work, but my problem is, that the three blocks are below each other. They get their fixed position as if I was not using overlays and just get hidden.
What I want is the three blocks to be all on the same position (the one of the About Foo block). Is that possible?