16 1 8 29 12 1

... 3... 4 1.... 4 2.... 5... 6 3.... 6 4.... 6 5.... 6 6. HTML... 7... 8 7.... 8 8.... 10 9.... 12... 15 10.... 15 11.... 16... 19 12.... 19... 20 13... 20... 21 14.... 21 15.... 22... 24 16... 24 17.... 26 18.... 27 19.... 28 20.... 30... 31 21. gif jpeg png... 31 22.... 33... 35 23.... 35 24.... 36... 38 25.... 38 26. 24... 40 27.... 41 1

28.... 42 29.... 43 30.... 44 31.... 45 32.... 46 33.... 47 34.... 48... 49 35.... 49 36.... 50... 52 37.... 52 38.... 53 39.... 54 PDF HTML... 55 40.PDF... 54 41.PDF... 56 42.Word Excel PDF... 57 43. PDF... 58 44.... 60... 61 45.1... 61 46.... 62 47.... 63 48.... 64 49.Flash JavaScript... 65 50.... 66 51.... 67 52.... 68 53.... 69 54.... 70 55.... 71 56.... 72 57.... 73 58.... 74 1... 76 2 JIS X 8341-3:2016... 78 2

HTML JIS X 8341-3:2016 JIS X8341-3:2016 JIS X 8341-3 p8p78 Advance Advance JIS X 8341-3 3

1. 9 1997 4

2. 2 16 1 8 24 3 28 1 JIS X 8341-3 IT 1 City of Sapporo 5

3. 4. 2 city.sapporo.jp 1 welcome.city.sapporo.jp 5. 3 29 11 Microsoft Edge Internet Explorer11.0 Firefox52.0 Safari9.0 Chrome Android OS 7.0 ios iphone ipad 9 2 city.sapporo.jp abc.co.jp 3 Internet Explorer Firefox 6

Internet Explorer10.0 PC IBM 6. HTML utf-8 BOM XML <?xml version= 1.0 encoding= utf-8?> DOCTYPE XHTML1.0Transitional html/head/meta/titile/link/script/body CMS 7

7. JIS X 8341-3 - - 3 JIS X 8341-3 16 2004 6 20 22 2010 8 20 JIS X 8341-3:2010 28 2016 3 22 JIS X 8341-3:2016 4 JIS X 8341-3:2010 W3C 5 WCAG2.0 2.0 A AA AAA 3 JIS X 8341-3:2016 ISO/IEC40500 2012 WCAG2.0 A AA AAA A AA AAA 4 Web Web Web 5 World Wide Web Consortium 8

JIS X 8341-3 1 p76 URL http://www.city.sapporo.jp/koho/hp/accessibility/hoshin.html WCAG2.0 http://waic.jp/docs/understanding-wcag20/overview.html WCAG2.0 http://waic.jp/docs/wcag-techs/overview.html 9

8. 6 6 10

24 6 91.7% 93.4% 11

9. 12

1 ) marquee blink ) ) 7 OS 8 ) OS 7 8 Operating System 13

) 9 ) OS IT 9 14

10. 15 JIS X 8341-3:2016 2.4.2 A 15

11. 1 2 3 3 3 3 2 16

1 1 1 6 1 h1 1 2 h2 1 2 3 3 4 2 1 3 2 17

JIS X 8341-3:2016 1.3.1 A 2.4.1 A 2.4.6 AA 18

12. 10 10 Web Web Web Web Web 19

13. p82 20

14. - _ URL 24 http://www.city.sapporo.jp/kokusai/publications.html a i u e o ka ki ku ke ko sa shi su se so ta chi tsu te to 50 na ni nu ne no ha hi fu he ho ma mi mu me mo ya yu yo ra ri ru re ro wa o ga gi gu ge go za ji zu ze zo da ji zu de do ba bi bu be bo pa pi pu pe po kya kyu kyo gya gyu sha shu sho ja ju cha chu cho bya byu nya nyu nyo pya pyu hya hyu hyo gyo byo mya myu myo jo pyo rya ryu ryo 21

15. 22

1. 2. 3. 1. 2. 3. 4. html JIS X 8341-3:2016 2.4.5 AA 23

16. table 24

2 3 2 3 table 1. 2 3 2. 3. 4. JIS X 8341-3:2016 1.3.1 A 1.3.2 A 25

17. caption summary 4 3 1. 2. 3. 4. JIS X 8341-3:2016 1.3.1 A 26

18. JIS X 8341-3:2016 1.3.1 A 1.3.2 A 27

19. JIS X 8341-3:2016 1.3.1 A 1.3.2 A 28

3 46 29

20. th 0 14 18 1,743 13.6 19 1,738 13.5 20 1,725 13.5 1. 2. 3. 4. 27 4 0,905,134 46.6% 1,037,222 53.4% JIS X 8341-3:2016 1.3.1 A 30

21. gif jpeg png gif jpeg png GIF 700 800 1MB 31

2,500 2,000 5MB 21 700 500 200KB 21 Advance SWS Downloads http://web.intra.city.sapporo.jp/downloads/fsoft/ 32

22. alt alt= alt= 33

JIS X 8341-3:2016 1.1.1 A 34

23. 11 YouTube 12 wmv wma YouTube YouTube 13 Microsoft Windows Media Player 10 24 YouTube Sapporo_PRD https://www.youtube.com/user/sapporoprd YouTube YouTube YouTube 011-211-2036 11 12 Windows Media Playar YouTube 13 YouTube YouTube https://support.google.com/youtube/troubleshooter/2888402?hl=ja 35

24. 14 14 36

JIS X 8341-3:2016 1.1.1 A 1.2.1 A 1.2.2 A 1.2.3 A 1.2.5 AA 37

25. 60 1985 1603 26 2014 2 17. 2006/3/3 2006 3 3 26 2014 2 17 22 00 23 00 26 2014 2 17 18 26 2014 2 17 6 30 38

2 2011 3 10 39

26. 24 24 15:30 15 30 2 8 00 30 14 30 0 00 24 00 0 59 24 24 11 30 40

27. FAX 011-211-2036 FAX 011-218-5161 FAX TEL tel FAX FAX FAX FAX /FAX 011-xxx-xxxx -011-xxx-xxxx 011 060-0001 1 2 1-7 11 2 5 2-5 9 5 1-31 506 xxx-xxxx 2F B1F 2 1 41

28. 2cm 10 10m 2 H 2SO 4 cm kg 32 CO2 1. 2. 1 42

29. JIS X 8341-3:2016 1.3.2 A 43

30. 3 5W1H When Where Who What Why How 1 1 1 30 44

31. JIS X 8341-3:2016 1.4.4 AA 45

32. 15 Windows Macintosh ( ) 15 JIS X 0208 7 8 2 46

33. 1 NPO DVD 123 windows ABC 47

34. JIS X 8341-3:2016 1.4.5 AA 48

35. 4.5:1 http://weba11y.jp/tools/cca/ JIS X 8341-3:2016 1.4.3 AA 49

36. 50

JIS X 8341-3:2016 1.3.3 A 1.4.1 A 51

37. JIS X 8341-3:2016 1.4.1 A 52

38. URL JIS X 8341-3:2016 2.4.4 A 53

39. 54

PDF HTML 40.PDF PDF PDF PDF PDF PDF 5MB PDF PDF 100KB 26 4 1 13 1 2 1 1 200 PR PDF 100KB JIS X 8341-3:2016 1.1.1 A 55

41.PDF PDF PDF 1. Adobe Acrobat Reader DC 2. Adobe Acrobat Reader DC Adobe Acrobat 56

42.Word Excel PDF Microsoft Word Microsoft Excel Word Excel PDF PDF 1. Word Excel 2. 3. 57

43. PDF PDF Word Excel PDF Word Excel PDF Adobe Acrobat PDF 42 Word PDF Excel PDF OCR 16 PDF Word Excel Adobe Acrobat PDF 16 OCR 58

PDF Acrobat Word PDF PDF / PDF http://help.adobe.com/ja_jp/acrobat/using/ws58a04a822e3e50102bd615109794195ff-7d10.w.html WCAG2.0 2.0 http://waic.jp/docs/wcag-techs/overview.html#pdf PDF PDF 40 PDF 59

44. http://www3.city.sapporo.jp/download/shinsei/ 60

45.1 1 450 500 1 2 3 1. 2. 61

46. 1 1,024 700 800 21 Excel 1 100 100 62

47. SSL 17 SSL 17 SSL Secure Socket Layer 63

48. 18 1 URL Yahoo! Google Advance 18 2 FRAMEIFRAME 64

49.Flash 19 JavaScript 20 Flash JavaScript Flash Flash iphone ipad JavaScript JavaScript HTML Flash JavaScript Advance JavaScript noscript object /object 19 Macromedia Adobe Systems 20 Netscape Communication 65

50. 1 1 5Kbyte 1 66

51. Advance a href input type = text value HTML Tab http://waic.jp/docs/understanding-wcag20/keyboard-operation-keyboard-operable.html http://waic.jp/docs/understanding-wcag20/keyboard-operation-trapping.html JIS X 8341-3:2016 2.1.1 A 2.1.2 A 67

52. 5 URL Advance JIS X 8341-3:2016 2.2.1 A 68

53. 21 21 GIF Advance JIS X 8341-3:2016 2.2.2 A 21 69

54. 22 HTML HTML tabindex Tab 18 Advance JIS X 8341-3:2016 7.2.4.3 A 22 70

55. Advance JIS X 8341-3:2016 2.4.7 AA 71

56. Tab Tab Tab Advance JIS X 8341-3:2016 7.3.2.1 A 72

57. 23 45 45 Advance JIS X 8341-3:2016 3.2.4 AA 23 component 73

58. 74

Advance JIS X 8341-3:2016 3.3.1 A 3.3.2 A 3.3.3 AA 3.3.4 AA 75

1 http://www.city.sapporo.jp/koho/hp/accessibility/hoshin.html 2016 3 22 JIS X 8341-3:2016 - - 3 2016 http://www.city.sapporo.jp/ https://www.city.sapporo.jp/ CMS URL http://transitfare.city.sapporo.jp/ryokin/ http://transitfare.city.sapporo.jp/unkojoho/ http://www.119.city.sapporo.jp/ http://www.city.sapporo.jp/ncms/citytax/osameru/ http://www.city.sapporo.jp/ncms/hokenjo/qq/ http://www.city.sapporo.jp/ncms/hospital/ http://www.city.sapporo.jp/ncms/jigyohaiki/web_teisyutu/ http://www.city.sapporo.jp/ncms/suido/dansui-dakusui/ http://www2.city.sapporo.jp/opendata/ http://www3.city.sapporo.jp/somu/hyoka/torikumi/ facebook mixi Google twitter SNS google google 76

PDF PDF 2018 3 31 JISX8341-3:2016 AA AA JIS X 8341-3:2016 A AA 2.3.2 3 AAA 77

2 JIS X 8341-3:2016 JIS 1.1.1 A alt 1.2.1 A 1.2.2 A 1.2.3 A 1.2.4 AA 1.2.5 AA 1.3.1 A ul ol 1.3.2 A 1.3.3 A 1.4.1 A 1.4.2 A 1.4.3 AA 4.5 1 1.4.4 AA 200% 1.4.5 AA 2.1.1 A 2.1.2 A 2.2.1 A 2.2.2 A 2.3.1 A 3 1 3 2.3.2 AAA 3 1 3 2.4.1 A 2.4.2 A 2.4.3 A 78

JIS 2.4.4 A 2.4.5 AA 2.4.6 AA 2.4.7 AA 3.1.1 A 3.1.2 AA 3.2.1 A 3.2.2 A 3.2.3 AA 3.2.4 AA 3.3.1 A 3.3.2 A 3.3.3 AA 3.3.4 AA 4.1.1 A HTML CSS 4.1.2 A name role value 79