Implent remaining CSS features [was #7493]
{color:red}
reported by [~wissenbach] at 2008-05-15
previously known as [trac#59|http://www.textgrid.de/trac/ticket/59] {color}
The implemented CSS 2.1 features have been catalogued(see [trac#32|http://www.textgrid.de/trac/ticket/32] ) in the documentation under vex-textgrid-doc.
Implement remaining features (possibly think of non-standard ways to implement them in the editor, example: display:none-property).
Keep the documentation in sync!