\section{1 Section}\label{sec:section}

\subsection{1 Subsection}\label{sec:subsection}

\begin{figure}
\centering
\includegraphics{./image.png}
\caption{Figure1}\label{fig:figure1}
\end{figure}

\subsubsection{1.1 Subsubsection}\label{sec:subsubsection}

\section{2 Section}\label{sec:section-1}

\subsubsection{2.1.1 Subsubsection}\label{sec:subsubsection-1}

sec.~\ref{sec:subsubsection}

fig.~\ref{fig:figure1}
