\documentclass{article}
\usepackage[a4paper, left=3cm,right=3cm]{geometry}

\usepackage{fancyhdr}
\renewcommand{\headrulewidth}{0mm}
\fancyhead{}
\fancyfoot{}
\fancypagestyle{plain}{GAMM PF 2026}
\pagestyle{fancy}

\setlength\parindent{0pt}

\date{}

\begin{document}


% Please, do not change any of the above lines
% ===========================================
% Type down your title
\title{Sample \LaTeX\ abstract for submission}

% Authors
% Use \underline for the presenting author
\author{%
	Author 1$^{a}$,
	\underline{Author 2}$^{a}$\footnote{\tt{author@university.com}},
	Author 3$^{b}$,
	Author 4$^{a,b}$
	\\\\
	%	   
	\small$^{a}$ Affiliation 1\\
	%	    
	\small$^{b}$ Affiliation 2
}%
       
\maketitle

% Main abstract
Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet \cite{example}.


\begin{thebibliography}{}
    \bibitem{example}
        A. Nonymous, B. Decided, Article title, \emph{Journal Name} \textbf{123}(4), pp. 5--6\\
    \end{thebibliography}

\end{document}
