template.tex

\documentclass[10pt]{article}

\usepackage[a4paper,pdftex]{geometry}
\usepackage[english]{babel}

\usepackage{hyperref}
\usepackage{graphicx}
\usepackage{xcolor}

\usepackage{titlesec}

\renewcommand{\thesection}{}
\titleformat{\section}[display]
{\bfseries\Large}
{\Huge\thesection}
{4ex}
{\filleft}
[\vspace{2ex}%
\titlerule]

\renewcommand{\thesubsection}{}
\titleformat{\subsection}[display]
{\bfseries\small}
{\thesubsection}
{2ex}
{\filright}

\renewcommand{\thesubsubsection}{}
\titleformat{\subsubsection}[display]
{\bfseries\small}
{\thesubsubsection}
{2ex}
{\filright}
[\vspace{2ex}%
\titlerule]


\usepackage{fontspec}
\setmainfont{Lato Light}

\def\tightlist{}
\definecolor{grey}{rgb}{0.9,0.9,0.9}
\definecolor{darkgrey}{rgb}{0.3,0.3,0.3}
\newcommand{\HRule}[1]{\hfill \rule{0.2\linewidth}{#1}}
\newcommand{\sectionbreak}{\clearpage}

\setlength{\parindent}{0cm}
\setlength{\parskip}{1em}
\renewcommand{\baselinestretch}{1.3}

\hypersetup{
  colorlinks=true,
  linkcolor=grey,
  pdfborder = {0 0 0},
  filecolor=grey,
  urlcolor=darkgrey,
}
\hypersetup{linkcolor=black}

\usepackage{scrextend}

\usepackage[labelformat=empty]{caption}

\usepackage{letltxmacro}
\LetLtxMacro\latexincludegraphics\includegraphics
\renewcommand{\includegraphics}[2][]{%
    \frame{\latexincludegraphics[#1]{#2}}}

\begin{document}
\thispagestyle{empty}
\pagestyle{empty}

\colorbox{grey}{
  \parbox[t]{1.0\linewidth}{
    \centering \fontsize{30pt}{60pt}\selectfont
    \vspace*{5cm}
    
    \hfill $title$ \\
    \hfill $subtitle$\par
    
    \vspace*{5cm}
  }
}

\vfill

{\centering \large 
\hfill $author$ - $email$}

\clearpage

\begin{addmargin}[6cm]{1cm}
\raggedright
$body$
\end{addmargin}

\end{document}