\documentclass[12pt, landscape]{article}
\usepackage{fontspec}
\setmainfont{Bitstream Vera Sans}
\usepackage[a3paper, margin=1.5cm]{geometry}
\usepackage{xcolor}
\usepackage{dashrule}
\usepackage{multicol}
\usepackage{scrextend}
\usepackage{xpatch}
\usepackage{graphicx}
\graphicspath{{logo/}}

\definecolor{background}{HTML}{%(page_background_colour)s}
\definecolor{emphasistext}{HTML}{%(page_emphasis_text_colour)s}
\definecolor{normaltext}{HTML}{%(page_normal_text_colour)s}
\definecolor{deemphasistext}{HTML}{%(page_deemphasis_text_colour)s}

\pagenumbering{gobble}
\pagecolor{background}

\begin{document}
\begin{minipage}{0.5\textwidth}
\includegraphics[height=5cm, keepaspectratio]{{%(logo_file)s}}
\vspace{0.1cm}
\end{minipage} \hfill
\begin{minipage}{0.3\textwidth}
\end{minipage} \hfill
\begin{minipage}{0.2\textwidth}
\begin{flushright}
\begin{center}
{\fontsize{20}{20}\selectfont
\textcolor{emphasistext}{%(domain_main)s}\textcolor{deemphasistext}{%(domain_tld)s}\\
\textcolor{emphasistext}{%(email_user)s}\textcolor{deemphasistext}{%(email_domain)s}\\
\textcolor{deemphasistext}{%(irc_network)s}\textcolor{emphasistext}{%(irc_channel)s}\\
\textcolor{deemphasistext}{twitter.com/}\textcolor{emphasistext}{%(twitter)s}\\
\textcolor{deemphasistext}{facebook.com/}\textcolor{emphasistext}{%(facebook)s}\\
}
\end{center}
\end{flushright}
\end{minipage}\\
\hdashrule[0cm]{39.5cm}{1pt}{2pt}\\
\begin{center}
\begin{minipage}{0.6\textwidth}
\begin{flushright}
\textcolor{deemphasistext}{{\fontsize{30}{30}\selectfont What's going on in Week }}
\vspace{0.3cm}
\end{flushright}
\end{minipage}
\begin{minipage}{0.3\textwidth}
\textcolor{emphasistext}{{\fontsize{45}{50}\selectfont %(week_number)s }}\vspace{0.3cm}\\
\end{minipage}
\end{center}
\noindent\hdashrule[0cm]{39.5cm}{1pt}{2pt}\vspace{0.3cm}\\


\begin{minipage}[t][17cm][t]{\textwidth}
\begin{multicols}{2}

%(event_content)s 
%(special_text)s

\end{multicols}
\end{minipage}

\noindent\hdashrule[0cm]{39.5cm}{1pt}{2pt}
\end{document}
