- From: Jukka K. Korpela <jkorpela@cs.tut.fi>
- Date: Wed, 20 Mar 2013 16:24:19 +0200
- To: mariannanaak@googlemail.com
- CC: "www-validator@w3.org" <www-validator@w3.org>
2013-03-20 15:05, mariannanaak@googlemail.com wrote: > Validating http://baku.inf-d.de/ws12ba70/indext.html > Error [html5]: "Error Line 54, Column 25: Duplicate ID navigation_main. > > |<ul id="navigation_main">| The id attribute value must be unique within a document. In this case, the same value is used several times. This is one of the most useful checks that validators perform. If an id value is not unique, strange things may happen, especially in scripting. Since the style sheet seems to use #navigation_main, probably with the intent that rules are applied all elements with that id, the simplest solution is probably to change the id attribute to a class attribute, class="navigation_main", and use class selector .navigation_main instead of id selector #navigation_main. Things get more complicated if the id attribute is also used in scripting. Yucca
Received on Wednesday, 20 March 2013 14:24:49 UTC