main-abstract.tex

\documentclass[a4paper,11pt]{article}

\usepackage{hyperref}
\usepackage[inline]{enumitem}

\title{
    Paper Title
}
\author{Giacomo Lanciano}
\date{}

\begin{document}
% \frontmatter
\maketitle

% \mainmatter
\input{abstract.tex}
\end{document}