pandoc change headline style
===

I would like to convert this Markdown:

    # headline 1
    
    My text
    
    ## headline 2

To have something like this in docx:

    <customStyleTitle1>headline 1</customStyleTitle1>
    <text>My text</text>
    <customStyleTitle2>headline 2</customStyleTitle2>

To be clear, I would like to create custom style and to apply it to my titles.
I know there is the option `--reference-docx` but I don't know how to apply the styles to my headlines...