\documentclass[a4paper,10pt]{scrartcl}

\input{Base.tex}

\begin{document}
\begin{figure}[ht]
\centering
\begin{tikzpicture}[x=1cm,y=1cm]

\grid{18}{26}{light-gray}

\end{tikzpicture}
\end{figure}
\end{document}