Updated carousel example

I have updated the carousel example to address the following issues:

  1.  Visible pause icon
  2.  Changed a[role=button] to use button elements
  3.  Updated CSS for styling focus of buttons

Updated example:
https://raw.githack.com/w3c/aria-practices/issue1007-visible-pause-carousel/examples/carousel/carousel-1/carousel-1.html



Jon Gunderson, Ph.D., CPWA
Coordinator of Accessible IT Group
University of Illinois at Urbana/Champaign
1207 S. Oak Street
Champaign, IL 61820

Phone: (217) 244-5870
E-mail: jongund@illinois.edu<mailto:jongund@illinois.edu?Subject=Re%3A%20Alternative%20date%20combobox%20grid%20date%20picker%20example%20for%20ARIA%20APG&In-Reply-To=%3CBYAPR11MB3413C2168E1DF82F6E4C7B2CC8BE0%40BYAPR11MB3413.namprd11.prod.outlook.com%3E&References=%3CBYAPR11MB3413C2168E1DF82F6E4C7B2CC8BE0%40BYAPR11MB3413.namprd11.prod.outlook.com%3E><mailto:jongund@illinois.edu<mailto:jongund@illinois.edu?Subject=Re%3A%20Alternative%20date%20combobox%20grid%20date%20picker%20example%20for%20ARIA%20APG&In-Reply-To=%3CBYAPR11MB3413C2168E1DF82F6E4C7B2CC8BE0%40BYAPR11MB3413.namprd11.prod.outlook.com%3E&References=%3CBYAPR11MB3413C2168E1DF82F6E4C7B2CC8BE0%40BYAPR11MB3413.namprd11.prod.outlook.com%3E>>
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