- From: Laura Carlson <lcarlson@d.umn.edu>
- Date: Tue, 25 Nov 2014 14:27:56 -0600
- To: John Foliot <john@foliot.ca>
- Cc: w3c-wai-ig <w3c-wai-ig@w3.org>
Hey John, Great to hear from you. Thank you very much for the thoughtful reply and the .offscreen-text CSS. You wrote: > if each page on > your site always visually started with an <h2>, and was styled such that the > "snappy marketing text" served as a good visual "heading" of what is on the > page, then what? Would those users with cognitive and learning disabilities > really be locked out? I argue no, as for the most part they are using the > visual styling of the headings to grok the semantic structure, and not the > enumeration of headings in the code. That's an excellent question that I have asked and haven't gotten an answer to yet. New pages (say within a department or college) in the CMS could be consistent by starting with an <h2>. I hope I am wrong but I fear that the <h2> will not be used to quickly orient users to the page but for rather promotional/marketing text. > From my perspective, if all you are using the <h1> for is to echo back what > is also in the <title>, then I would suggest that it is a bit of a mis-use > of the <h1>, and that for sighted users it likely isn't a big deal. Then the real solution seems to be to turn the <h2> into an <h1> and forget hiding. anything: <h1>Snappy Marketing Heading to Quickly Orient Everyone</h1> <!-- Rest of the page --> > I've often noted as well that for some reason, many authors think that the > content of the <h1> and the <title> should be the same - although why that > is I do not know I usually cite: http://www.w3.org/QA/Tips/Use_h1_for_Title Thanks again! Best Regards, Laura Laura Carlson wrote: > >> A Web developer in our marketing department has asked if the following >> markup, which is meant for use in Drupal themes and Dreamweaver >> templates throughout the organization, would meet WCAG AA with the >> notion that screen readers will be able to receive a good heading for >> the page and some snappy marketing text could go in the <h2>. ><SNIP> > >> <h1 class="hidden">Page Title</h1> >> <!-- No other content --> >> <h2>THIS IS WHERE THE DOCUMENT HEADING GOES.</h2> >> >> Thoughts on that markup and WCAG AA? > > Quick question: Fill in the blank - 2, 4, 6, __, 10 > > Who didn't come up with eight? > > Through observation and discussion, I've long held that the "level" of the > heading(s), while providing some semantic information, is less useful than > the relationships created by headings at different levels. In my question > above, you likely understood the pattern (that if a=2, and b=4, and c=6, > then d MUST=8) - the relationship is far more important than the > character/number itself. I'd go so far as to say that if you built a web > site (multiple pages) that only used even numbered headings, while "weird" > and perhaps even a little off-putting, that for those users who rely on > _structured semantic headings_ to navigate, that they would pick it up very > quickly, and have no problem navigating my "even headings only" site. (Not > for one minute however am I advocating this, I simply toss it out as a straw > man argument for contemplation.) > > Does it *really* matter if each page visually starts with an <h2>, if the > content of that <h2> is meaningful, unique and helps orient the end-user to > what the page contains? What real hardship is caused if each page visually > starts at an <h2>, and then uses heading structures properly, so that users > can comprehend that all of the <h3>'s are children of any given <h2>, and > that an <h4> MUST be the child of its parent <h3>? We've long discussed > whether a page should have more than one <h1>, and frankly I think the jury > is still out on that one - most agree that it is probably a very rare > instance, but that edge and corner cases could exist... yet I think it would > be fairly trivial to find pages with hidden <h1>s and then multiple <h2>s - > effectively creating the same "edge case" but without being "wrong". > > I've often noted as well that for some reason, many authors think that the > content of the <h1> and the <title> should be the same - although why that > is I do not know (perhaps because the <title> content is not rendered well > in browsers?). It very much feels like that here - heck Laura's sample code > even states: > > <h1 class="hidden">Page Title</h1> > > ... yup, page TITLE, and then our friend Sailesh wrote: > >> Non-SR users will not see a page title. >> Yes in some situations one may have an h1 and no content before the >> next heading. > > From my perspective, if all you are using the <h1> for is to echo back what > is also in the <title>, then I would suggest that it is a bit of a mis-use > of the <h1>, and that for sighted users it likely isn't a big deal. What is > more important is that the <h2>snappy marketing text</h2> is going to be > styled to quickly orient the sighted user to *that* page, and that headings > used after that initial <h2> are properly structured usage. > >> I stated that if he hides the <h1> he would be locking out people with >> cognitive and learning disabilities who would benefit from the ability >> to identify content by a visible <h1>. My advice to him was to keep the >> <h1> visible and intuitively easy to understand. > >...or so goes the common wisdom, but let me ask you this: if each page on > your site always visually started with an <h2>, and was styled such that the > "snappy marketing text" served as a good visual "heading" of what is on the > page, then what? Would those users with cognitive and learning disabilities > really be locked out? I argue no, as for the most part they are using the > visual styling of the headings to grok the semantic structure, and not the > enumeration of headings in the code. > > In fact, back when the W3C was working on XHTML2, the proposal was to > eliminate the enumeration, and simply use <h> - allowing the user agent to > build the "outline algorithm" mechanically. > (http://www.w3.org/TR/xhtml2/mod-structural.html#sec_8.5.) > > >> I have cited Info and Relationships Success Criteria 1.3.1, "When such >> relationships are perceivable to one set of users, those relationships >> can be made to be perceivable to all." > > Correct, but nowhere does it state that the relationship model must always > start at "1", especially when 1=redundant information, and "2" is styled in > such a way as to serve the practical function of "1" - it's a game at that > point: the intent is met, if not the pure-play mechanics. > > Laura, sometimes when using system-wide CMS tools (like Drupal) across an > organization your templates need to meet the majority requirement. If all of > the sites using Drupal (for example) have a consistent heading navigation > structure [sic], then I don't see any real harm in having all pages visually > start with appropriately styled <h2>'s - in fact I would be more concerned > that the <title> and <h1> content is repeating itself for no practical > reason, and even then it is a minor concern. > > >> >> In addition I have pointed him to: >> http://www.d.umn.edu/itss/training/online/structure/coding/index.html#w >> riting >> >> Other thoughts? >> > > Yup, you offered the following code sample for <strike>hidden</strike> > <ins>off-screen</ins> text: > > > <style> > > .hidden { > > position: absolute; > > top: -9999px; > > left: -9999px; > > } > > </style> > > Our testing has shown that in some rare instances, this will introduce a > horizontal scroll bar in some browsers, even if you cannot actually scroll > L-to-R - the visual bar still manifests. A well-tested and "better" > solution is to use CSS differently: > > .offscreen-text { > font-size:0; > width:0; > height:1px; > position:absolute; > overflow:hidden; > z-index:-1000;} > > My $0.05 Canadian (Canada no longer has $0.01 coins <grin>) > > JF > ------------------------------ > John Foliot > Web Accessibility Specialist > W3C Invited Expert - Accessibility > Co-Founder, Open Web Camp
Received on Tuesday, 25 November 2014 20:28:27 UTC