No-fly zone

In HTML5, browser makers must continue to support certain crusty legacy elements. Web developers though should quit using them. For example, most of us have stopped using and should continue avoiding theĀ font, strike, and tt elements in HTML5. CSS is the way to go here. To no one’s surprise, the HTML5 no-fly-zone includes the frame, frameset, and noframes elements because of their history of aggression against usability and accessibility.

For more information on elements to avoid, see “Absent Elements” on the W3C site.