\documentclass[student,12pt]{uniflow}

\begin{document}

\section*{Testing the unified workflow}

\begin{problem}
\textbf{Problem:} Where is my hat?
\end{problem}

\begin{solution}
\textbf{Solution:} In my jacket
\end{solution}

\begin{howtograde}
\textbf{Grading:} One or none
\end{howtograde}

\end{document}
