\usepackage{setspace} \usepackage{enumitem} \renewcommand\thesection{\Roman{section}} \renewcommand\thesubsection{\arabic{subsection}} \renewcommand\thesubsubsection{\alph{subsubsection}} % ------------------------------------ % \usepackage{titlesec} \titleformat{\section} {\LARGE\bfseries} {\thesection. } {0em} {\setstretch{0.4}} \titleformat{\subsection} {\Large} {\thesubsection. } {0em} {\setstretch{0.4}} \titleformat{\subsubsection} {} {\thesubsubsection \,- } {0em} {\setstretch{0.4}} \setlength{\parindent}{0em} % ------------------------------------ % \usepackage{fancyhdr} \pagestyle{fancy} \fancyhf{} \setlength{\headheight}{14pt} \lhead{\nouppercase{\leftmark}} \rfoot{Page \thepage} % ------------------------------------ % \usepackage{dirtytalk}