WebAIM - Web Accessibility In Mind

E-mail List Archives

Re: Resize Text - rem with a px fallback


From: Henny Swan
Date: Jun 25, 2014 9:49AM

Hi Al,

You've probably already done this but check your site stats to get an idea of who is using what and, as Tim says, if you don't officially support earlier version you probably have leeway there. It will be interesting to see what percentage are on desktop and mobile

Also keep in mind that due to the nature of the site many users might not have the new shiny things. Having said that in user testing we've generally found that people who are unemployed or retired tend to not have desktops or laptops in favour of tablets and mobiles (Disclaimer: this is very anecdotal).

One final thing, do you have any apps for iPhone or Android? This might be an alternative for some but obviously can't be used as an excuse not to implement something on the web side correctly.


On 25 Jun 2014, at 15:59, Tim Harshbarger < <EMAIL REMOVED> > wrote:

> It probably depends on what browsers you are needing to support for your site. If the site is only intended to work with IE9 and later, I don't think it would be a fail. If the site is intended to work with older browsers, then I think it would be a problem.
> Tim
> -----Original Message-----
> From: <EMAIL REMOVED> [mailto: <EMAIL REMOVED> ] On Behalf Of Alistair Duggin
> Sent: Wednesday, June 25, 2014 5:27 AM
> Subject: [WebAIM] Resize Text - rem with a px fallback
> Hi,
> I'm working on a responsive website and to set the size of the fonts we are using rem with a fallback in px.
> This means that all modern browsers (including IE 9 and above) are able to resize the fonts (to more than 200%). However, users of Internet explorer 6, 7 and 8 will not be able to resize the fonts.
> I'm wondering if text not being resizable in some legacy browsers would result in a WCAG 2 fail. Changing the fallback from px to em will involve a considerable amount of development time to fix due to the font size compounding issues with em - and will also result in a messy and harder to maintain codebase. Is using rem with a px fallback an acceptable/accessible implementation?
> Here's an article with information about the approach we have taken:
> http://snook.ca/archives/html_and_css/font-size-with-rem
> This is the website I work on:
> https://www.moneyadviceservice.org.uk/en?roptin=1
> cheers,
> Alistair Duggin
> > > > > >