HTML

HTML HELP
LABEL - Form Field Label:
http://www.htmlhelp.com/reference/html40/forms/label.html

GWT-EXT
(This is not HTML but this is the only place I could put this link.)
GWT-Ext is a powerful widget library that provides rich widgets like Grid with sort, paging and filtering, Tree’s with Drag & Drop support, highly customizable ComboBoxes, Tab Panels, Menus & Toolbars, Dialogs, Forms and a lot more right out of the box with a powerful and easy to use API. It uses GWT and Ext.
http://gwt-ext.com/