p {
    color: #000000;
    font-family: Arial,Helvetica,sans-serif;
    font-size: 12px;
    display: inline;
}

a:link {
    color: #FF0000;
}

a:hover{
    text-decoration: underline;
}

.headline {
    color: #000000;
    font-family: Arial,Helvetica,sans-serif;
    font-size: 18px;
    font-weight: bold;
    display: block;
}

.byline {
    color: #666600;
    font-style: italic;
    font-weight: bold;
    display: inline;
}

<p class='headline'>Flash adds advanced anti-aliasing rendering technology!</p><p><span class='byline'>San Francisco, CA</span>--Adobe Inc. announced today a new version of Flash that features a brand new font rendering technology called Advanced Anti-Aliasing, most excellent at rendering small text with incredible clarity and consistency across platforms. For more information, visit the <a href='http://www.adobe.com'>Adobe Flash web site.</a></p>

//В первом кадре:
this.createTextField("news_txt", 99, 50, 50, 450, 300);
news_txt.border = true;
news_txt.html = true;
news_txt.multiline = true;
news_txt.wordWrap = true;
news_txt.selectable = false;

var myVars_lv:LoadVars = new LoadVars();
var styles:TextField.StyleSheet = new TextField.StyleSheet();

var txt_url:String = "myText.html";
var css_url:String = "html_styles.css";

styles.onLoad = function(success:Boolean):Void {
    if (success) {
        /* If the style sheet loaded without error, 
            then assign it to the text object, 
            and assign the HTML text to the text field. */
        news_txt.styleSheet = styles;
} else {
        trace("Unable to load CSS file.");
    }
};
styles.load(css_url);

myVars_lv.onData = function(src:String):Void {
    if (src != undefined) {
        news_txt.htmlText = src;
    } else {
        trace("Unable to load HTML file");
    }
};
myVars_lv.load(txt_url);