[Tex/LaTex] reduce the top margin of the abstract

abstractmargins

How can I reduce the top margin of the abstract?

\documentclass{article}
\usepackage[english]{babel}
\usepackage{lipsum}

\title{title title title title title title title}
\author{Blah Blah}

\begin{document}
\maketitle

\begin{abstract}
\lipsum[75]
\end{abstract}

\section{Introduction}
\lipsum
\end{document}

I will use it for thesis:

https://www.overleaf.com/latex/templates/mkzrzktcbzfl/clone

Best Answer

This is a little hackish, but you can use the titling package to remove the space after the date, in effect reducing the abstract's top margin:

\documentclass{article}
\usepackage[english]{babel}
\usepackage{lipsum}
\usepackage{titling} % we need this for the \postdate tag

\title{title title title title title title title}
\author{Blah Blah}
% The line below removes 1em of space directly below the date,
% which here is also directly above the abstract
\postdate{\end{center}\vspace*{-1em}}

\begin{document}
\maketitle

\begin{abstract}
\lipsum[75]
\end{abstract}

\section{Introduction}
\lipsum
\end{document}

You may notice that some other vertical spacing regarding the title matter is affected somewhat by using the titling package, but the good thing about it is every aspect of this spacing is easily customizable; e.g.,

\setlength{\droptitle}{-1em}

will raise all of the title matter vertically by 1em; similar commands can be found for pretty much any part of the title material.