Python cheat sheet table problem

python_cheat_sheet.tex

\documentclass[10pt,landscape]{article}
\usepackage{multicol}
\usepackage{tabularx}
\usepackage{calc}
\usepackage{ifthen}
\usepackage[landscape]{geometry}
\usepackage{verbatim}
\usepackage{graphicx}

\usepackage{color}
\usepackage[usenames,dvipsnames,svgnames,table]{xcolor}
\usepackage{menukeys}

\usepackage{hyperref}
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% -----------------------------------------------------------------------

\begin{document}

\raggedright
\footnotesize

\begin{center}
     \includegraphics[width=12em]{../img/python-logo-master-v3-TM.pdf}

     \Large{\textbf{\color{WildStrawberry}{Python REgex cheat sheet}}} \\
\end{center}

\section{Meta characters}



\begin{tabularx}{\textwidth}{ |X|X|X|X| }
  \hline
  \texttt{re.match('go.', 'gob')}  & 2  & 3  & 4  \\
  \hline
  \color{ForestGreen}{\texttt{re.match('go.', 'gob')}}  & 2  & 3  & 4  \\
  \hline
\end{tabularx}


\section{Quantifiers}

\begin{tabularx}{\linewidth}{@{}lX@{}}
\texttt{*}          & 0 or more repetitions\\
\texttt{+}          & 1 or more repetitions\\
\texttt{?}          & 0 or 1 repetitions\\
\end{tabularx}

\begin{center}
\rule{0.3\linewidth}{0.25pt}
\end{center}


\includegraphics[width=6em]{../img/by_nc_sa.eps} This work is licensed under a \href{http://creativecommons.org/licenses/by-nc-sa/3.0/}{Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License}.

{\copyright\ 2012 \href{http://matan.name}{Adam Matan}.}

\begin{tiny}
Sources: 	%\href{http://rayninfo.co.uk/vimtips.html}{Best of Vim Tips},
			%\href{http://people.csail.mit.edu/vgod/vim/vim-cheat-sheet-en.pdf}{Vim Visual Cheat Sheet}
			
StackOverflow.com questions %\href{http://stackoverflow.com/questions/506075/how-do-i-fix-the-indentation-of-an-entire-file-in-vi}	{506075},
							%\href{http://stackoverflow.com/questions/12128678/vim-go-to-beginning-end-of-next-method}				{12128678}

Graphics credits: 	%\href{http://commons.wikimedia.org/wiki/File:Gnome-face-smile.svg}			{Happy icon},
					\href{http://www.python.org/community/logos/python-logo-master-v3-TM.png}	{Python Logo},
					\href{http://creativecommons.org/about/downloads}					{Creative Commons License}



Template and general idea based on a \href{http://www.stdout.org/~winston/latex/}{\LaTeX\ template by Winston Chang}.
\end{tiny}


\end{document}