\documentclass[10pt,a4paper]{article}

% Packages
\usepackage[margin=2.5cm]{geometry}
\usepackage[english]{babel}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage{booktabs}
\usepackage{caption}
\usepackage{authblk}
\usepackage{setspace}
\usepackage{fancyhdr}
\usepackage{titlesec}
\usepackage{lmodern}
\usepackage{natbib}

\setlength{\parindent}{0pt}
\setlength{\parskip}{6pt}
\setlength{\bibsep}{0pt}

% Authblk configuration
\renewcommand\Authfont{\Large}
\renewcommand\Affilfont{\itshape\small}
\renewcommand\Authsep{, }
\renewcommand\Authand{, }
\renewcommand\Authands{, }

% Subection heading format
\titleformat{\subsection}
  {\normalfont\itshape}
  {\thesubsection}{1em}{}
	
% Section heading format
\titleformat{\section}
  {\normalfont\bfseries}
  {\thesection}{1em}{}	

% Header configuration
\pagestyle{fancy}
\fancyhf{}
\fancyhead[C]{\textit{Authors' name / 10th International Conference on Very High Cycle Fatigue, Paris - France}}
\fancyfoot[C]{\thepage}
\renewcommand{\headrulewidth}{0pt}

% Title
\title{Title -- Extended Abstract -- Max. 4 Pages}

\author[1]{Author Name}
\author[2]{Second Author}
\author[1]{Third Author}

\affil[1]{Affiliation, Institution, City, Country}
\affil[2]{Affiliation, Institution, City, Country}

\date{}

\begin{document}

\maketitle
\thispagestyle{fancy}

\vspace{-3.5em}
\begin{center}
\textit{E-mail address:} \texttt{corresponding\_email@example.com}
\end{center}

\vspace{-1em}

% Abstract
\rule{\linewidth}{0.5pt}

\textbf{Abstract} (max. 200 words)

This document provides a template for the preparation of extended abstracts. The abstract should briefly present the objectives, methods, main results and conclusions of the work. It should not exceed 200 words.

\vspace{0.5em}

\textbf{\textit{Keywords:}} fatigue; materials; crack propagation; VHCF

\rule{\linewidth}{0.5pt}

\section{Introduction}

Here introduce the main text. The paragraphs continue from here and are only separated by headings, subheadings, images and formulae. 

Follow this order when typing manuscripts:

\begin{itemize}
\item Title
\item Authors
\item Affiliations
\item Abstract
\item Keywords
\item Main text
\item Acknowledgements
\item References
\end{itemize}

\section{Structure}

Please make sure that you use normal fonts in your document and check spelling carefully. Use SI units whenever possible.

\subsection{Subsection Example}

Subsection headings should be italic and numbered (e.g., 1.1, 1.2).

\section{Tables}

All tables should be numbered with Arabic numerals and include a caption.

\begin{table}[h]
\centering
\caption{An example of a table}
\begin{tabular}{ccc}
\toprule
Example & A & B \\
\midrule
An entry & a & b \\
Another entry & c & d \\
Another entry & e & f \\
\bottomrule
\end{tabular}
\end{table}

\section{Illustrations}

All figures should be numbered and referenced in the text.

\begin{figure}[h]
\centering
\includegraphics[width=0.5\textwidth]{example-image}
\caption{Example figure}
\end{figure}

\section{Equations}

Equations should be numbered consecutively.

\begin{equation}
\sigma = \frac{F}{A}
\end{equation}

Vectors and matrices should appear in bold type, while scalar variables should be written in italic.

\section{General Guidelines}

Avoid hyphenation at the end of lines. Define all non-standard abbreviations or symbols when first introduced.

\section*{Acknowledgements}

Acknowledgements should be placed before the references section.

%If you use bib file
 %\bibliography{biblio.bib}

\bibliographystyle{abbrv}
\begin{thebibliography}{00}
\begin{small}
\bibitem{Paper1} First Author, Second Author and Third Author. Title of the paper. \textit{Journal Name}, Volume(Issue):page--page, Year.
\bibitem{Paper2} First Author, Second Author and Third Author. \textit{Title of the Book}. Publisher, Address, Year.
\end{small}
\end{thebibliography}

\end{document}