styleSheet on TextField not working

programming flash
1

I can’t find out how to apply a stylesheet to a text field. It just does not work.

This is the css:

p {
    font-size: 24;
    font-family: Verdana, Geneva, sans-serif;
    font-style: italic;
    color: #006666;
}

This is the html:

<p>first line</p>

And the whole application is very simple. It loads the html and css and applies them to TextField. It looks like the only rule that gets applied is the font-style: italic; - the text displayed on the stage is 12px, black and Times New Roman and italic

Why?

And here is the whole application code:

stop();

import flash.text.TextField;
import flash.events.Event;
import flash.text.StyleSheet;
import flash.net.URLLoader;

var htmlLoader:URLLoader;
var cssLoader:URLLoader;

var tf:TextField = new TextField();
tf.width = 300;
addChild(tf);

htmlLoader = new URLLoader();
htmlLoader.addEventListener(Event.COMPLETE, htmlLoaded);
var htmlRequest:URLRequest = new URLRequest("html.html");
htmlLoader.load(htmlRequest);

cssLoader = new URLLoader();
cssLoader.addEventListener(Event.COMPLETE, cssLoaded);
var cssRequest:URLRequest = new URLRequest("css.css");
cssLoader.load(cssRequest);


function htmlLoaded(event:Event):void {
    var myHtml:String = htmlLoader.data;
    tf.htmlText = myHtml;
}

function cssLoaded(event:Event):void {
    var myCss:String = cssLoader.data;
    var style:StyleSheet = new StyleSheet();
    style.parseCSS(myCss);
    tf.styleSheet = style;
    trace (tf.htmlText);
}