\tikzstyle{epibox} = [
draw=epigraphbordercolour,
shade,
top color=epigraphfillcolour!40,
bottom color=epigraphfillcolour!5,
very thick,
rectangle,
rounded corners,
inner sep=10pt,
inner ysep=15pt
]
\newcommand{\hugequote}{
\fontsize{42}{48}\selectfont\color{quotationmarkcolour}\textbf{``}
\vskip -.5em
}
\newcommand{\epigraph}[2]{
\vskip -1.3em
\begin{tikzpicture}
\node [epibox] (box){
\begin{minipage}{0.95\textwidth}
\parbox{0.98\textwidth}{
{\hugequote} \vskip -.5em
\hangindent .75em
\parindent 2.2em
\setlength\marginparsep{-1em}
#1}
\vskip .5em
\begin{flushright}
\color{epigraphauthorcolour}\textsc{#2}
\end{flushright}
\end{minipage}
};
\end{tikzpicture}
\vskip 1.1em
}