2.2.1 Remove default attributes

Default attributes do not need to be specified.

For example, the default value for the <script> tag's "language" attribute is "javascript". You do not need to specify <script language="javascript"> unless you are specifying a specific version of JavaScript (which you probably shouldn't be doing anyways) -- just <script> will do. Same goes for any other superfluous attributes rendered redundant by CSS, like border,cellpadding,bgcolor, etc.