Unnamed
public text v1 · immutable\documentclass[11pt,twoside,a4paper]{article}
\usepackage{a4wide,amsmath,amssymb}
\begin{document}
\begin{invoice}{EUR}
\ProjectTitle{Monat X}{0}
\Fee{Datum}{EUR/Stunde}{10}
\end{invoice}
\end{document}
\documentclass[11pt,twoside,a4paper]{article}
\usepackage{a4wide,amsmath,amssymb}
\begin{document}
\begin{invoice}{EUR}
\ProjectTitle{Monat X}{0}
\Fee{Datum}{EUR/Stunde}{10}
\end{invoice}
\end{document}