\documentclass[a1,final]{a0poster}
%%%Load packages
\usepackage{multicol} 			%3-column layout
\usepackage[left=2cm,right=2cm,bottom=0cm,top=0cm]{geometry}			%Reset margins
\usepackage{helvet}				%Load Helvetica font & CM math
\usepackage{color}				%Needed for colour boxes & coloured text
\usepackage{graphicx}
%%%Define colours and lengths
\definecolor{headingcol}{rgb}{0.5,0.7,1}			%Colour of main title
\definecolor{boxcol}{rgb}{0.7,0.2,0.2}		%Edge-colour of box and top banner
\fboxsep=1cm							%Padding between box and text
\setlength{\columnsep}{2cm}				%Set spacing between columns
\renewcommand{\familydefault}{\sfdefault}	%Set main text to sans-serif

%%%Format title
\makeatletter							%Needed to include code in main file
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\null									%Sets position marker
{
\color{headingcol}\sffamily\Huge		%Set title font and colour
\@title \par}%
\vskip 0.6em%
{
\color{white}\sffamily\Large				%Set author font and colour
\lineskip .5em%
\begin{tabular}[t]{l}%
\@author
\end{tabular}\par}%
\vskip 1cm
\par
}
\makeatother

\title{Making A1 scientific posters easily with \LaTeX}

\author{Author A \& Author B\\
University College London}

\begin{document}
\hspace{-3cm}								%Align with edge of page, not margin
\vspace{2cm}
\includegraphics[width=844mm]{Black_Landscape.pdf}
%\colorbox{boxcol}{							%Coloured banner across top
\begin{minipage}{842mm}					%Minipage for title contents
\vspace{-20cm}
\maketitle
\end{minipage}
%}
\vspace{-3cm}

\begin{multicols}{3}							%Use 3-column layout
\raggedcolumns							%Don't stretch contents vertically

%%%Column1
\section*{Introduction}
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\section*{Method}
Sift the flour and salt into a large mixing bowl with a sieve held high above the bowl so the flour gets a airing. Now make a well in the centre of the flour and break the eggs into it. Then begin whisking the eggs - any sort of whisk or even a fork will do - incorporating any bits of flour from around the edge of the bowl as you do so.\\
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Now get the pan really hot, then turn the heat down to medium and, to start with, do a test pancake to see if you're using the correct amount of batter. I find 2 tbsp is about right for an 18cm/7in pan. It's also helpful if you spoon the batter into a ladle so it can be poured into the hot pan in one go. As soon as the batter hits the hot pan, tip it around from side to side to get the base evenly coated with batter. It should take only half a minute or so to cook; you can lift the edge with a palette knife to see if it's tinged gold as it should be. Flip the pancake over with a pan slice or palette knife - the other side will need a few seconds only - then simply slide it out of the pan onto a plate.
Stack the pancakes as you make them between sheets of greaseproof paper on a plate fitted over simmering water, to keep them warm while you make the rest.
\columnbreak

%%%Column 2
\section*{Maths}
Malthusian growth model:
$$P(t) = P_0 e^{rt}$$
Verhulst equation:
$$P(t) = \frac{K P_0 e^{rt}}{K + P_0 (e^{rt} - 1)}$$
Lotka-Volterra equations:
$$\frac{dx}{dt} = x(\alpha - \beta y)$$
$$\frac{dy}{dt} = - y(\gamma - \delta x)$$
Michaelis-Menten:
$$\frac{d[P]}{dt} = V_{max} \frac{[S]}{K_m + [S]}$$


\section*{Lists and tables}
Itemize:
\begin{itemize}
\item Item 1
\item Item 2
\item Item 3
\end{itemize}
\null
Five-day forecast:
\begin{center}
\begin{tabular}{lccccc}
Day & Summary & Max day & Min night & Wind (mph) & Visibility\\
\hline
Saturday & Sun/cloud & 16 & 10 & 6 & poor\\
Sunday & Rain & 14 & 7 & 3 & poor\\
Monday & Showers & 13 & 6 & 21 & poor\\
Tuesday & Sun & 15 & 9 & 7 & good\\
Wednesday & Showers & 17 & 12 & 6 &moderate
\end{tabular}
\end{center}


\columnbreak

%%%Column 3
\section*{Discussion}
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\nocite*

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\end{multicols}
\end{document}
