# How do I align enumerate items inside empty description?

I have an enumerate list inside an empty description item.

The minimal file is,

\documentclass[11pt]{article}

\begin{document}
\begin{description}
\item [A Label:]

\begin{enumerate}
\item A1.
\item A2.
\item A3.
\end{enumerate}
\end{description}

\end{document}


The problem is, A1 comes after the colon (:). As you can see here,

But I want A1 in a new line, with 1. aligned with 2.

I tried putting a \relax in the empty description item. Nothing was improved.

Any suggestion will be appreciated.

-

  \item [A Label:]\mbox{}\\[-1.5\baselineskip]

where the \mbox forces a paragraph start so the nested list indents normally.
If I am not mistaken, this approach may separate the two environments (description and enumerate) at a break page, in such a way that A Label: will be placed at the end of the page while the list 1., 2., 3. will move to the next page. What would be a way to avoid this behavior? – pluton Jan 6 '14 at 2:28
@pluton using \\* rather than \\  would strongly discourage a page break – David Carlisle Jan 6 '14 at 10:16