1. Create a general structure in HTML with all DIVs that represent major widgets
<script type="text/javascript" language="javascript" src="myapp/myapp.nocache.js"></script></head><body><div id="header"><h1>Welcome to My App</h1><div id="facebook_login"></div></div><div id="tool_tip"></div><table id="main_content"><tr><td id="left_column"><div id="list_of_products"></div></td>...
2. Style the widgets in CSS
#header h1 {background-color: yellow;border-style: dotted;font-size: xx-large;}
3. Build the widgets in Java. Note: widgets are composites of various HTML elements and can have their own CSS styling.
RootPanel.get("facebook_login").clear();RootPanel.get("facebook_login").add(new FbLogin(session));
