\documentclass[12pt]{article}
%=======================================================================
%% Uncomment at most one of the babel commands below if you do NOT    %%
%% want to use US English                                             %%
%%--------------------------------------------------------------------%%
%\usepackage[british]{babel}
%\usepackage[portuguese]{babel}
%\usepackage[spanish]{babel}
%=====================================
%% The amssymb package provides various useful mathematical symbols
\usepackage{amssymb}
%=====================================
\begin{document}
\pagestyle{empty}
%=====================================
\begin{center}
\Large
%
{\bf Sample Abstract for LAWCG 2024 }\\[0.2in]
%
\large
%
Author 1 $^{1,*}$\hspace{.2cm}
%
%IMPORTANT: the asterisk * indicates the author who will present the work.
%
Author 2 $^2$\hspace{.2cm}
%

%
$^1$ Filiation author 1 \\
%
$^2$ Filiation author 2\\
%

\end{center}
%=======================================
\normalsize
%
\line(1,0){390}\\
%
{\it Keywords: .....}\\
%
\line(1,0){390}\\
%==========================================

Here goes the abstract.  The complete abstract must be at most 1 page
long. 





%=========================================
\end{document}\documentclass[12pt]{article}
%=======================================================================
%% Uncomment at most one of the babel commands below if you do NOT    %%
%% want to use US English                                             %%
%%--------------------------------------------------------------------%%
%\usepackage[british]{babel}
%\usepackage[portuguese]{babel}
%\usepackage[spanish]{babel}
%=====================================
%% The amssymb package provides various useful mathematical symbols
\usepackage{amssymb}
%=====================================
\begin{document}
\pagestyle{empty}
%=====================================
\begin{center}
\Large
%
{\bf Sample Abstract for LAWCG 2024 }\\[0.2in]
%
\large
%
Author 1 $^{1,*}$\hspace{.2cm}
%
%IMPORTANT: the asterisk * indicates the author who will present the work.
%
Author 2 $^2$\hspace{.2cm}
%

%
$^1$ Filiation author 1 \\
%
$^2$ Filiation author 2\\
%

\end{center}
%=======================================
\normalsize
%
\line(1,0){390}\\
%
{\it Keywords: .....}\\
%
\line(1,0){390}\\
%==========================================

Here goes the abstract.  The complete abstract must be at most 1 page
long. 





%=========================================
\end{document}