Q:

Add "Black right-pointing pointer" HTML entity in css content

I'm trying to add a "Black right-pointing pointer" html entity into my css :after content but to no avail. 
I know you need to use a unicode value but I can't find one that works for this.  This is the unicode number U+25BA and this is the HTML code &#9658;

A:

You should use a backslash and a hex code:
i:after {
    content: "\25ba";
}

Obviously, this character must be present in the font used.  Demo: http://jsfiddle.net/c29VS/1/

