# LaTeX Beamer Block "Sandwich Style"

How can I create a block in LaTeX Beamer in "Sandwich Style", i.e., that has both a title and a footer. Ideally, the background colors could even be different. Here is an illustration (with incorrect spacing):

• I would love to see an answer with only beamer native code (no tcolorbox) Nov 13, 2013 at 11:08

With tcolorbox is easy to make a sandwich box. This one uses bicolor skin. There also exists a beamer skin which produces more 'a la beamer' boxes, but I don't know how to set a different background color for lower text part like bicolor does.

\documentclass{beamer}
\usepackage{tcolorbox}
\tcbuselibrary{skins}

\newtcolorbox{sandwich}[1]{bicolor, colframe=blue!75!black, colback=red!50!white, colbacklower=blue!75!black, collower=white,title=#1}

\begin{document}
\begin{frame}{Sandwich box with tcolorbox}

\begin{sandwich}{Testing 1-2-3}
This is a text
\tcblower
Yet another text
\end{sandwich}

\end{frame}
\end{document}


To complete Ignasi's answer, it is possible produce more " a la Beamer " sandwich boxes rounding corners, removing the frame and adding shadows, or alternatively use a beamer skin and a bicolor skin together, in that order. The MWE show both cases:

\documentclass{beamer}
\usecolortheme[RGB={128,128,255}]{structure}
\setbeamercolor*{block title example}{fg=red!50!black,bg= green!80!black!50}
\setbeamercolor*{block body example}{fg=green!20!black, bg= green!15}
\setbeamercolor*{block body alerted}{fg= orange!50!black, bg= orange!15}
\usepackage[skins]{tcolorbox}

\begin {document}
\begin{frame}{Sandwich box a la Beamer}

\begin{columns}[c]
\begin{column}{.3\linewidth}
\begin{block}{Block}Text\end{block}
\begin{exampleblock}{Example  block}Text\end{exampleblock}
\end{column}
\begin{column}{.4\linewidth}

% Without beamer skin:

\begin{tcolorbox}[
left=1mm,right=1mm,top=1mm,bottom=1mm,middle=1mm,
skin=bicolor,
arc=5pt,
bottomrule=0pt,
leftrule=0pt,
rightrule=0pt,
toprule=0pt,
colbacklower=block body example.bg,
collower=block title.bg,
colframe=block title.bg, %structure, %blue!75!black,
frame style={left color=block title.bg,
right color=block title example.bg!100!black},
% better shadow than beamer skin
,title=Testing 1-2-3]
A bicolor box
\tcblower
a la \dotfill \alert{no} Beamer mode
\end{tcolorbox}

\bigskip

% With beamer skin:

\begin{tcolorbox}[
left=1mm,right=1mm,top=1mm,bottom=1mm,middle=1mm,
beamer, % Warning: must be before of bicolor skin
skin=bicolor,
colback=block body.bg,
colbacklower=block body example.bg,
colupper=block body example.fg,
%colframe=block title.bg,
frame style={draw=none,fill=none, left color=block title.bg, right color=block title.bg!70!black},
,title=Testing 1-2-3]
A bicolor box
\tcblower
a la Beamer mode
\end{tcolorbox}

\end{column}
\end{columns}

\end{frame}
\end{document}


As showed above, it is possible have 3 color and even gradients. I recommend to be cautious with this, using with moderation Beamer colours to be consistent with the rest of the presentation. Note that above code is only to show how to do, it is not intended to be an model of good taste (Get a elegant color scheme is a task for you.)

• Thanks a lot for your indeed elegant answer. Do you know if there is a way to get the spacing exactly as with the classical beamer boxes? For example, the top right box has a caption with more height than the classical beamer box. Thanks! Nov 14, 2013 at 18:42
• @Ruedi, try to add toptitle=-.5mm, bottomtitle=-1mm, as first options in each tcolorbox.
– Fran
Nov 14, 2013 at 19:07