\documentclass[11pt]{article}
\usepackage[letterpaper, margin=.9in]{geometry}
% necessary packages and doc parameters
\usepackage{graphicx, amssymb}
\usepackage{url, hyperref}
\usepackage{array}
\usepackage[table,dvipsnames]{xcolor}
\usepackage{afterpage}
\usepackage{fix-cm}
\usepackage{sectsty}
\usepackage[export]{adjustbox}
\usepackage{setspace}
\setlength\textwidth{6.5in}
\setlength\textheight{8in}
\definecolor{FSBlue}{HTML}{13284c}
\definecolor{FSRed}{RGB}{177, 16, 44}
\usepackage{newtxmath}
\doublespacing
\sectionfont{\color{FSBlue}}
\subsectionfont{\color{FSRed}}
\begin{document}
\input{title}
\tableofcontents
\newpage
\input{sections/intro}
\input{sections/methods}
\input{sections/results}
\input{sections/conclusion}
\end{document}
