Add a linebreak after "Appendix A" in HTML output

[asmaier]

For document class book when we have in latex

\chapter{Example}

this will be converted to

Chapter 1
Example

in HTML. However if it is a chapter inside the appendix

\appendix
\chapter{Example}

the latexml post processing will convert this to

Appendix A Example

Note the missing linebreak between "Appendix A" and the title of the appendix. To be consistent also with the PDF output of latex, a linebreak should be inserted after "Appendix A" , so that the HTML looks like

Appendix A
Example

[brucemiller]

Aha, just a simple CSS fix. Done; Thanks for the report!