insert figure latex
%...
\begin{figure}[h!]
\centering
\begin{subfigure}[b]{0.2\linewidth}
\includegraphics[width=\linewidth]{coffee.jpg}
\caption{Coffee.}
\end{subfigure}
\begin{subfigure}[b]{0.2\linewidth}
\includegraphics[width=\linewidth]{coffee.jpg}
\caption{More coffee.}
\end{subfigure}
\begin{subfigure}[b]{0.2\linewidth}
\includegraphics[width=\linewidth]{coffee.jpg}
\caption{Tasty coffee.}
\end{subfigure}
\begin{subfigure}[b]{0.5\linewidth}
\includegraphics[width=\linewidth]{coffee.jpg}
\caption{Too much coffee.}
\end{subfigure}
\caption{The same cup of coffee. Multiple times.}
\label{fig:coffee3}
\end{figure}
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