\documentclass{scrbook}
\usepackage{mdframed}
\usepackage{anyfontsize}
\usepackage{adjustbox}
\usepackage{graphicx}
\newcommand{\orlymedia}{\includegraphics[scale=.08]{orly.png} {\Large\sffamily ORLY}}
\mdfdefinestyle{l3style}{%
leftmargin=0pt,
backgroundcolor=cyan,
fontcolor=white,
linewidth=0pt,
innertopmargin=20pt,
innerbottommargin=20pt,
innerleftmargin=20pt,
font={\fontsize{80}{70}\selectfont}
}
\begin{document}
\pagestyle{empty}
\begin{adjustbox}{minipage=.6\textwidth,center}
\em ``Moral of the story: never read the documentation, bad things happen.''\par