\documentclass[pdftex,12pt]{elpres}

\usepackage[latin1]{inputenc}
\usepackage{pifont}
\usepackage{color}

\definecolor{blue}{rgb}{0,0,0.7}

\usepackage[document]{ragged2e}
\RaggedRight
\raggedright

\begin{document}
\begin{titlepage}
\vspace*{9mm} 
\begin{center} \Huge
 \bfseries \textcolor{blue}{Title of a presentation written with the \\
    \texttt{elpres} class}
\end{center}

\begin{center}
\large
Author\\[1ex]Institution
\end{center}
\end{titlepage}

\begin{psli}[Title]
The first page

\begin{citemize}
  \item One
  \item Two
\end{citemize}

\begin{cenumerate}
  \item the first enumerated item
  \item the second enumerated item
\end{cenumerate}

\begin{cdescription}
  \item [One] described item
  \item [Another] described item
\end{cdescription}

\end{psli}

\begin{rsli}
The second page
\end{rsli}

\end{document}