Instructs the UA to enable a set of extra restrictions on any content hosted by the iframe - HTML5. seamless. Differences between HTML and XHTML. In XHTML, prohibit property shorthand, seamless attribute must be defined as
On any page that will be loaded in a frame, call seamless.frame. Examples of the
The content you see here is displayed in a div.This emulates the new HTML5 seamless iframe attribute that is not yet supported by browsers. 2.