I wanted a frame with an example composed by a description and an image but the result is not what I want and I don't know where the problem is...
\begin{frame}[allowframebreaks]
\frametitle{Classical Definition}
\begin{example}
\begin{columns}[t]
\begin{column}{5cm}
Description
\end{column}
\begin{column}{5cm}
\includegraphics[width=4cm]{fig/nrpexample.png}
\end{column}
\end{columns}
\end{example}
\end{frame}
Thanks for your help


Tis similar to thetoption, butTaligns the tops of the first lines whiletaligns the so-called baselines of the first lines. If strange things seem to happen in conjunction with thetoption (for example if a graphic suddenly “drops down” with thetoption instead of “going up,”), try using this option instead." (from the manual) – LaRiFaRi Jul 04 '16 at 12:01Toption but applied to thecolumnsenvironnement, without the use of\PassOptionsToPackagecommand – Vavou Jul 04 '16 at 12:04\PassOption.....is just added in order to make your code compilable. As I do not havefig/nrpexample.png, I could not compile your code. You should always try to make the MWE as simple as possible. – LaRiFaRi Jul 04 '16 at 12:07