Test Case xhtml1_wcag2_20050630_1.3_l3_sc1_002: Sequence defined by XHTML, but changed with CSS

Formal Metadata

Formal Metadata
TitleSequence defined by XHTML, but changed with CSS
DescriptionThe sequence of content is defined by the sequence of XHTML elements, but changed in the presentation with CSS.
CreatorBenToWeb (johannes.koch@…)
RightsCopyright BenToWeb 2004-2007

Technologies and Features

Technologies are markup languages or data formats. If the technology is a markup language, “features” refers to elements and attributes.

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

XHTML™ 1.0 The Extensible HyperText Markup Language (Second Edition)

CSS 2.0 Specification

CSS 2.0 Specification

Test Data


This is a test for the reading order of content: an assistive technology should be able to provide an alternative presentation of content while preserving the reading order needed to perceive meaning. The test file uses CSS to display the second paragraph above the first one, so the user agent needs to be able to turn CSS to restore the reading order.

Test Modes

End user.

Test Files

Test file.


xhtml1_wcag2_20050630_1.3_l3_sc1_002 (XML).


“Rules” refer to success criteria in WCAG 2.0, checkpoints in WCAG 1.0 and similar requirements.

Primary Rules

The test case fails the following success criterion: http://www.w3.org/TR/2006/WD-WCAG20-20050630/#content-structure-separation-sequence.

Functional Outcome


Technical Comment

The reading order can be determined from the HTML markup but is changed by the CSS.