I have seen many answers to this question, but all of them seem very complicated and I don't understand how they work at all (copy and pasting them into my code doesn't seem to work either).
I should also add that I'm completely new to this.
All I want is a simple code that takes the default section title in LaTeX
and fills it in to become something like
This is what I currently have:
\documentclass[11pt, oneside]{article}
\usepackage{geometry}
\geometry{a4paper}
\usepackage{graphicx}
\begin{document}
\section{Introduction}
\end{document}
Any help will be much appreciated!



titlesecpackage. – Aug 31 '19 at 03:59