Screen Readers and 'display:none'

When an element is hidden with display: none, the browser doesn't generate a box for the element; the element is not visible on the screen, and the layout of the page isn't effected by the element. As screen readers are supposed to read the screen, it makes sense that they do not announce content that is hidden with display: none.

Lemon, Gez. Juicy Studio (2007). Articles>Web Design>Accessibility>CSS

Choose an Accessible Image Replacement Method

The technique of using CSS to replace normal HTML text, mostly for headings, with a background image in order to achieve a particular look has been talked about many, many times since early 2003.Several different image replacement methods have been proposed, each with their pros and cons. Some methods create accessibility problems, while others place restrictions on the type of image you can use or force you to use extraneous markup. No method that I am aware of is perfect.

Johansson, Roger. 456 Berea Street (2007). Articles>Web Design>Accessibility>CSS

Screen Readers Sometimes Ignore display:none

Using display:none does not always hide content from screen readers like JAWS and Window-Eyes, but there is a workaround.

Johansson, Roger. 456 Berea Street (2008). Articles>Web Design>Accessibility>CSS

Unobtrusive and Keyboard Accessible Connected Select Boxes

Any web developer who has created a reasonably complex form is probably aware of the concept of multiple select elements that are connected – choosing something from one select box either makes a new select box appear or changes the options of one that is already visible.

Johansson, Roger. 456 Berea Street (2007). Articles>Web Design>Accessibility>CSS

Building Accessible Static Navigation with CSS

When building a navigation menu for a web site, steps should be taken to ensure that it is accessible, and degrades gracefully in older browsers with lesser CSS support. In this article we will explore one such implementation. The navigation menu you see in this example is built with valid, semantic HTML and CSS - no JavaScript is involved, as I felt this was unnecessary. The static (non-expanding/collapsing) nature of the example suits a web site comprised of twenty or less target pages.

Palinkas, Frank M. Opera (2008). Articles>Web Design>Accessibility>CSS

Grid Design Basics: Grids for Web Page Layouts

Since tables were co-opted for layout purposes, columns have become key to many Web design layouts, and this thinking continued when CSS took over from tables (at least in the minds of savvy designers) for Web-page presentation. However, other fields of layout design don’t think in arbitrary columns, they work with grids, and these form the basis for the structure of page designs. This article will provide the lowdown on grid design for Web pages.

Grannell, Craig. Opera (2008). Articles>Web Design>Accessibility>CSS

Screen Readers and CSS Layout

Screen readers are mostly mystical devices for almost all of us. Few of us actually own them. They’re incredibly expensive. Fewer yet know how to use them well, what their capabilities are, or how they actually work. Is it little wonder then, that big names in our web design world question how screen readers handle modern layout techniques? Not at all. The two gurus quoted below have other strengths, and specialities. They probably haven’t used a screen reader in ages.

Easton, Bob. Access Matters (2005). Articles>Web Design>Accessibility>CSS

CSS in Action: Invisible Content Just for Screen Reader Users

Most of the techniques for making web content accessible to screen readers are invisible to visual users. Alternative (alt) text, table header tags, table summaries, and form tags are examples of techniques that make a big difference for screen reader users, but which have little or no impact on the visual appearance of the web content. Every once in a while, though, web designers confront situations in which the addition of accessible markup does have an impact on the visual layout. In some cases, this visual impact can decrease the usability of the content for visual users. In other cases, designers simply want to provide a more pleasing layout or appearance that would be compromised by including all of the text in a semantically correct format.

WebAIM (2007). Articles>Web Design>Accessibility>CSS