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I \usetheme[width=3cm]{Hannover} and

\setbeamertemplate{background}{}
\setbeamertemplate{background canvas}{}

to remove any background, so that the contents of the slides is the only object. I would like to achieve the same effect for the sidebar, but the analogous solution

\setbeamertemplate{sidebar}{}
\setbeamertemplate{sidebar canvas}{}

does not work (I don't see any effect of this). How to remove any background objects from the sidebar?

1 Answer 1

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\setbeamertemplate{sidebar canvas left}{} or \setbeamertemplate{sidebar canvas right}{} depending on where your sidebar is located, should work to remove the background color:

enter image description here

\documentclass{beamer}
\usetheme[width=3cm]{Hannover}
\setbeamertemplate{sidebar canvas left}{}

\begin{document}
\section{example section}
\begin{frame}
\frametitle{an example frame title}
example contents
\end{frame}
\end{document}
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  • Thank you! It worked in combination with \setbeamertemplate{background canvas}{} for full transparency. Also worked well with semi-transparent colors provided by setting, for the remaining text items, \transparent{0.8} from \usepackage{transparent}.
    – dolphin
    Commented Jan 13, 2020 at 11:38

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