\documentclass{enunepage}

\usepackage{svg}
\title{En une page... la classification périodique des éléments}
\geometry{landscape}
\DeclareUnicodeCharacter{2160}{I}
\DeclareUnicodeCharacter{2161}{II}
\DeclareUnicodeCharacter{2162}{III}
\DeclareUnicodeCharacter{2163}{IV}
\DeclareUnicodeCharacter{2164}{V}
\DeclareUnicodeCharacter{2165}{VI}
\DeclareUnicodeCharacter{2166}{VII}
\DeclareUnicodeCharacter{2167}{VIII}

% https://tex.stackexchange.com/questions/30720/footnote-without-a-marker
\newcommand\blfootnote[1]{%
    \begingroup
    \renewcommand\thefootnote{}\footnote{#1}%
    \addtocounter{footnote}{-1}%
    \endgroup
}

\begin{document}

\maketitle
\thispagestyle{fancy}

\vspace*{-1.15cm}
\begin{center}
    \scalebox{0.552}{\includesvg{img/tableau-impression.svg}}
    \blfootnote{Par Scaler,Michka B — Travail personnel, CC BY-SA 3.0, \url{https://commons.wikimedia.org/w/index.php?curid=8985780}.}
\end{center}

\end{document}