New Environment With Problems{1,2,3,…}

How can I define a new environment such that the following tex code would produce the following output?

\begin{customproblemsenv}
\item content1
\item content2
\end{customproblemsenv}


Problem 1. content1
Problem 2. content2

• A MWE would be very nice. On top, the problem can easily be solved by using more ways (e.g., enumerate- or newenvironment-like solution). – Marian G. Sep 11 '18 at 6:14
• As far as I'm aware, I can only make enumerate make items with numbers (1,2,3...) and characters ((a),(b),(c)...) . I'm more interested how it'd be done with environments though – Συλχαν Sep 11 '18 at 6:18

You can use enumitem to design lists with addition label formatting:

\documentclass{article}

\usepackage{enumitem,lipsum}

\newlist{customproblemsenv}{enumerate}{1}
\setlist[customproblemsenv]{
label = \textbf{Problem \arabic*.},
wide
}

\begin{document}

\lipsum[1]

\begin{customproblemsenv}
\item content1
\item content2
\item \lipsum[3]
\end{customproblemsenv}

\lipsum[2]

\end{document}


Continuing the above answer, the simpler code would be: (Check the documentation)

  \documentclass[letterpaper,12pt]{article}
\usepackage{enumitem}
\begin{document}

\begin{enumerate}[label = Problem \arabic*]
\item content1
\item content2
\end{enumerate}

\end{document}