# Blocks in Beamer

I want to put boxed text/block in Beamer and my LaTeX source is

\documentclass[pdf]{beamer}
\begin{document}
\begin{frame}
\begin{block}{Observation 1}
Simmons Hall is composed of metal and concrete.
\end{block}
\begin{block}{Observation 2}
Simmons Dormitory is composed of brick.
\end{block}
\begin{block}{Conclusion}
Simmons Hall $\not=$ Simmons Dormitory.
\end{block}
\end{frame}
\end{document}

This results in whereas what I want is

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Your MWE is using the default beamer theme, which doesn't define the blocks to have the colors you want. Try using a different theme, as below. Also, to get blue/green/red use block/exampleblock/alertblock, respectively.

\documentclass[pdf]{beamer}
\usetheme{Copenhagen}
\begin{document}
\begin{frame}
\frametitle{Frame title}
\begin{block}{Observation 1}
Simmons Hall is composed of metal and concrete.
\end{block}
\begin{exampleblock}{Observation 2}
Simmons Dormitory is composed of brick.
\end{exampleblock}
Simmons Hall $\not=$ Simmons Dormitory.
\end{frame}
\end{document}

You can also customize how things look by using \useinnertheme{} and \usecolortheme{}. See the beamer documentation for more info.

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Thanks. It works –  kamalbanga Apr 29 '14 at 15:30

You need to use a theme to have blocks appearing this way. Here is an example with "Boadilla"

\documentclass[10pt,a4paper]{beamer}
\usepackage[utf8]{inputenc}

\begin{document}

\begin{frame}{Title Frame}
Introduction sentece
\begin{block}{Title Block 1}
{
\begin{itemize}
\item item 1
\item item 2
\end{itemize}
}
\end{block}
\begin{exampleblock}{Title Block 2}
{
Text.
}
\end{exampleblock}