\newenvironment{reqtable}{
	\begin{tabular}{| p{0.05\linewidth} | p{0.35\linewidth} | p{0.5\linewidth} |}
        \hline
        \rowcolor{zcgray}
	\textbf{Nr.} & \textbf{Anforderung} & \textbf{Erläuterung}\\ \hline
}{
	\hline
	\end{tabular}
}