\documentclass[a4paper, 10pt]{article}
\usepackage{amsmath,amsfonts,amssymb}
\usepackage{a4}
\usepackage{amsthm}
\usepackage{palatino}
\usepackage{fancyhdr}
\usepackage{latexsym}
\usepackage{graphicx}
\usepackage[latin1]{inputenc}

\usepackage{lipsum} % call fake text
\renewcommand{\thefootnote}{\*}
\providecommand{\keywords}[1]{\textbf{Keywords:} #1}
\pagestyle{fancy}
\renewcommand{\headrulewidth}{0.4pt}
\renewcommand{\footrulewidth}{0.4pt}
\newcommand{\texthead}{\small\scshape}
\fancyhead{}
\fancyhead[C]{\small \bfseries \itshape {NCAPC27, Ecole Normale Supérieure Laghouat, Algeria}}

\fancyfoot{}
\fancyfoot[RO, LE]{\footnotesize NCAPC27, Ecole Normale Supérieure Laghouat. April 7-8, 2027, Algeria}

\begin{document}
	\begin{center}
		\Large
		\textbf{Title}
		\vspace{0.3cm}
		\normalsize
		\sffamily
		\\
		\underline{Author1,}    Author2,..\
		
		\vspace{0.3cm}
		\footnotesize
		Affiliation
		
		
		Email
		
		\vspace{0.5cm}
		\small
		
		\rmfamily
	\end{center}
	
	\vspace{0.5cm}
	\normalsize
	
	\textbf{Abstract}
	Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur? (Cicero, 45 BCe) \\
	
	\keywords{Keyword1; Keyword2; Keyword3;...}
	\section{Introduction}
	 Equations should be centered and numbered sequentially, with references in the text as 'Eq. 1'. Figures must have a minimum resolution of 300 dpi and should also be centered. Reference figures in the text as 'Fig. 1'. The figure captions should be in Arial, size 9, and placed below the figures. The same formatting applies to tables?centered in the upper, with captions in size 9, and referred to as 'Table 1' in the text. Use the IEEE style for citations and bibliography.
	 
	\lipsum[1-5] \cite{Godel1938-cp}
	\section{Second section}
	\lipsum[6-12]
	\section{Third section}
	\lipsum[12-18]
	\section{Conclusion}
	\lipsum[19-20]
	\begin{thebibliography}{11}
		\bibitem{Godel1938-cp} K. Godel, \textgravedbl The Consistency of the Axiom of Choice and of the Generalized Continuum-Hypothesis,\textacutedbl Proceedings of the National Academy of Sciences, vol. 24, no. 12, pp. 556\textendash557, Dec. 1938, doi: https://doi.org/10.1073/pnas.24.12.556.

	\end{thebibliography}
	
	
\end{document}