\documentclass[11pt,a4paper]{article}


\usepackage[english]{babel}
\usepackage{blindtext}
\usepackage{geometry}
\usepackage{lipsum}
 \geometry{
 a4paper,
 total={170mm,257mm},
 left=20mm,
 top=20mm,
 }


%\date{\today}

\begin{document}

\title{ \textbf{ Un titlu remarcabil de unic}}
\author{ Frentescu Stefan}
\maketitle

\abstract
\noindent \blindtext
}
\section{Section 1}
\lipsum
\section{Section 2}
\lipsum
\section{Section 3}
\lipsum


\end{document}