Differences between HTML4 and HTML5.

This is important for developing app :::

Acknowledging the real world. we won’t be writing any more HTML with center

The elements frame, frameset, and noframes are being removed from the language,

Some Web authors have misused tables in HTML as a way to control their page layout.

Browsers of the future (just another month or two!) will become more powerful because of the move towards the cloud, so that they’ll be able to handle more on their own.

Browser might give a hint for coding.