HTML5 Conference 2013 "モダンなCSS設計パターンを考える" の一部を改変したQCon Tokyo 2014 版スライドです。

1. QCon Tokyo 2014 Conference
Modern CSS Architecture
Hiroki Tani
モダンなCSS設計パターンを考える

2. Hiroki Tani
Front-end Engineer
CyberAgent, Inc.

3. ?Why Architecture

7. #news h2 {
border-bottom: 1px solid black;
padding: 1em 0.5em;
font-size: 18px;
font-weight: bold;
}

8. #news h2 {
border-bottom: 1px solid black;
padding: 1em 0.5em;
font-size: 18px;
font-weight: bold;
}
!
#faq .title {
border-bottom: 1px solid black;
padding: 1em 0.5em;
font-size: 18px;
font-weight: bold;
}

9. #news h2 {
border-bottom: 1px solid black;
padding: 1em 0.5em;
font-size: 18px;
font-weight: bold;
}
!
#faq .title {
border-bottom: 1px solid black;
padding: 1em 0.5em;
font-size: 18px;
font-weight: bold;
}
!
#service .feature .title {
border: 1px solid black;
padding: 0.5em;
font-size: 16px;
}

10. .column_2 #inbox .list { ... }
.column_3 #inbox .list { ... }
.column_3 #inbox .list .name { ... }
.column_3 #inbox .list .name p { ... }
.column_3 #inbox .list .name.reply { ... }
.column_3 #inbox .list .name.reply a { ... }
body#top .column_3 #inbox .list.left { ... }

11. !important

15. Goals of Better CSS Architecture
-Predictable
-Reusable
-Maintainable
-Scalable
http://article.enja.io/articles/css-architecture.html
予測しやすい
再利用しやすい
保守しやすい
拡張しやすい

16. Modular CSS

17. OOCSS
Nicole Sullivan
https://github.com/stubbornella/oocss/wiki

22. OOCSS
-Separate structure and skin
-Separate container and content
構造と見た目の分離
コンテナとコンテンツの分離

23. Media object

24. <div class="media">
<div class="media-image">
<img src="/img/seminar/15/tani.jpg">
</div>
<div class="media-body">
<p>...</p>
<ul>
<li><a>...</a></li>
</ul>
<p>...</p>
</div>
</div>

25. <div class="media">
<div class="media-image">
<img src="/img/seminar/15/tani.jpg">
</div>
<div class="media-body">
<p>...</p>
<ul>
<li><a>...</a></li>
</ul>
<p>...</p>
</div>
</div>

26. <div class="media">
<div class="media-image">
<img src="/img/seminar/15/tani.jpg">
</div>
<div class="media-body">
<p>...</p>
<ul>
<li><a>...</a></li>
</ul>
<p>...</p>
</div>
</div>

27. .media {
/* Clearfix */
}
.media-image {
float: left;
margin-right: 10px;
}
.media-image > img {
display: block;
}
.media-body {
overflow: hidden;
}

28. <div class="media skin-a">
<div class="media-image">
<img src="/img/seminar/15/tani.jpg">
</div>
<div class="media-body">
<p>...</p>
<ul>
<li><a>...</a></li>
</ul>
<p>...</p>
</div>
</div>

29. <div class="media skin-b">
<div class="media-image">
<img src="/img/seminar/15/tani.jpg">
</div>
<div class="media-body">
<p>...</p>
<ul>
<li><a>...</a></li>
</ul>
<p>...</p>
</div>
</div>

30. ?How to build modules

31. It depends.

32. Rule of Three
‘Refactoring’
http://en.wikipedia.org/wiki/Rule_of_three_(computer_programming)

33. 3, 6

34. 3, 6, 9, 12, 15 ...

35. 3, 6, 12, 24, 48 ...

36. 3, 6, 9

37. 3, 6, 9, 12, 15 ...

39. .fontSize10 {
font-size: 10px
}
.colorRed {
color: red
}

40. <p class="fontSize18 colorRed">
入力内容に誤りがあります。
</p>

41. <p class="box radius10 fontSize18 colorRed">
入力内容に誤りがあります。
</p>

42. .fontSize18 {
font-size: 18px
}

43. .fontSize18 {
font-size: 18px
}
!
@media only screen and (max-width : 320px) {
.fontSize18 {
font-size: 14px
}
}
⚠

44. .colorRed {
color: red
}

45. .colorRed {
color: orange;
}
⚠

46. .colorRed {
color: orange; /* あとで直す */
}
⚠

47. ⚠

48. ?How to maintain modules

49. SMACSS
Jonathan Snook
http://smacss.com/ja
日本語、あります

50. SMACSS
-Categorization
-Naming Convention
-Decoupling CSS from HTML
カテゴライズ
命名規則
HTMLとCSSの分離

51. SMACSS Categories
-Base
-Layout
-Module
-State
-Theme

52. /* # Base */
body, form {
margin: 0;
padding: 0;
}
a {
color: #039;
}
a:hover {
color: #03F;
}

53. /* # Layout */
#header {
width: 960px;
margin: auto;
}
.l-article {
border: solid #CCC;
border-width: 1px 0 0;
}
.l-grid {
margin: 0;
padding: 0;
list-style-type: none;
}
.l-grid > li {
display: inline-block;
margin: 0 0 10px 10px;
}

54. /* # State */
.is-hidden {
display: none;
}
.is-error {
font-weight: bold;
color: red;
}
.is-tab-active {
border-bottom-color: transparent;
}

55. /* # Theme */
/* ## Spring Theme CSS */
.theme-header {
background-image: url("/theme/spring/
header.png");
}
.theme-border {
1px solid pink;
}

57. Message-box
http://cdpn.io/hKBkm

58. <div class="msg">
<p>...</p>
</div>
.msg {
display: block;
border: 1px solid #cccccc;
border-radius: 8px;
padding: 1em;
background-color: #efefef;
color: #333333;
}

60. <div class="msg msg-error">
<p>...</p>
</div>
.msg {
...
}
.msg-error {
border: 1px solid #c0392b;
background-color: #fe9282;
}

62. <div class="msg msg-success">
<p>...</p>
</div>
.msg {
...
}
.msg-success {
border: 1px solid #27ae60;
background-color: #99f3c9;
}

64. <div class="msg msg-error">
<h2>...</h2>
<p>...</p>
</div>

65. <div class="msg msg-error">
<h2>...</h2>
<p>...</p>
</div>
.msg h2 {
font-size: inherit;
font-weight: bold;
}
!
.msg p {
margin-top: 0.6em;
}

67. .msg h2 {
font-size: inherit;
font-weight: bold;
}
!
.msg ul,
.msg p {
margin-top: 0.6em;
}
⚠

68. <div class="msg msg-error">
<h2 class="msg-title">
...
</h2>
<ul class="msg-body">
<li>...</li>
<li>...</li>
</ul>
</div>

69. .msg-title {
font-size: inherit;
font-weight: bold;
}
!
.msg-body {
margin-top: 0.6em;
}

70. <div class="msg msg-error">
<p class="msg-title">
...
</p>
<ul class="msg-body">
<li>...</li>
<li>...</li>
</ul>
</div>

72. <div class="msg msg-error">
<h2 class="msg-title">
<i class="msg-title-icon ico ico-label ico-alert"></i>
...
</h2>
<ul class="msg-body">
<li>...</li>
<li>...</li>
</ul>
</div>

73. .msg-title-icon {
vertical-align: -0.3em;
}
!
.ico {
display: inline-block;
}
!
.ico-alert {
background-image: url(...);
width: 24px;
height: 24px;
}
!
.ico-label {
margin-right: 0.3em;
}

74. %ico {
display: inline-block;
}
!
%ico-alert {
background-image: url(...);
width: 24px;
height: 24px;
}
!
%ico-label {
margin-right: 0.3em;
}
!
.msg-error-icon {
vertical-align: -0.3em;
@extend %ico;
@extend %ico-alert;
@extend %ico-label;
}

76. !
.msg-error {
border: 1px solid #c0392b;
background-color: #fe9282;
}

78. .msg-title {
font-size: inherit;
font-weight: bold;
}
.msg-body {
margin-top: 0.6em;
}

79. .msg {
...
}
.msg-error {
border: 1px solid #c0392b;
background-color: #fe9282;
}
.msg-title {
font-size: inherit;
font-weight: bold;
}

80. BEM
Yandex
http://bem.info/

81. BEM stands for ...
-Block
-Element
-Modifier

82. Block

83. Element

84. Modifier

85. .block {
...
}
.block__element {
...
}
.block_modifier {
...
}
.block__element_modifier {
...
}

86. .nav {
...
}
.nav__item {
...
}
.nav_segmented {
...
}
.nav__item_segmented {
...
}

87. .nav {
...
}
.nav__item {
...
}
.nav--segmented {
...
}
.nav__item--segmented {
...
}
http://enja.studiomohawk.com/2012/03/20/about-html-semantics-and-front-end-architecture/

88. .msg {
...
}
.msg--error {
border: 1px solid #c0392b;
background-color: #fe9282;
}

89. .msg__title {
font-size: inherit;
font-weight: bold;
}
.msg__body {
margin-top: 0.6em;
}
.msg__title-icon {
vertical-align: -0.3em;
}

90. MCSS
-Base
-Project
-cosmetic
http://operatino.github.io/MCSS/en/

91. FLOCSS
-Foundation
-Layout
-Object
https://github.com/hiloki/flocss
-Component
-Project
-Utility

93. Front-end Styleguide

94. Starbucks Style Guide
http://www.starbucks.com/static/reference/styleguide/

95. MailChimp Pattern Library
http://ux.mailchimp.com/patterns/

96. Twitter Bootstrap
http://getbootstrap.com

97. A Pattern Apart
http://patterns.alistapart.com/

98. http://alistapart.com/blog/post/getting-started-with-pattern-libraries
Code Example view

99. http://alistapart.com/blog/post/getting-started-with-pattern-libraries
Patchwork view

100. Front-end Styleguide

101. Front-end Styleguide
Living

103. KSS
http://warpspire.com/kss/styleguides/

104. Kalei
http://kaleistyleguide.com/

105. StyleDocco
http://jacobrask.github.io/styledocco/

106. //
// # 見出し
//
// 説明文を書きます。マークダウン形式です。
//
// ```
// <button type="button" class="btn btn-default">
// ``` で囲んだ部分にデモのHTMLを記述します。
// </button>
// ```
!
.btn {
display: inline-block;
...
&:hover,
&:focus {
color: @btn-default-color;
text-decoration: none;
}
}

107. $ styledocco -n "ProjectName" css/
$ styledocco -n "ProjectName" -o "mydocs"
$ styledocco -n "ProjectName" --preprocessor "lessc" less/

108. http://d.pr/v/46BF

110. ⚏🎬 👤👤 ⚏🎬
👤
Building Pages
Systems

111. Styleguide Driven Development
http://www.stubbornella.org/content/2014/04/09/style-guide-driven-development/

112. Developer vs Designer ?

113. ⚏🎬 👤👤

114. Developer with Designer

115. Best Practice

116. Best Practices

117. どんなに多くの人が貢献したとしても
どのコードも一人で書いたようにする
https://github.com/necolas/idiomatic-css
- Idiomatic CSS
All code in any code-base should look like a single person
typed it, even when many people are contributing to it.
“
”

118. 壊れない完璧な設計を求めるのではなく
壊れたときに勇気をもって修復できる設計を
“
”
- Anonymous

119. Thanks.
- twitter.com/hiloki
- inkdesign.jp
- slideshare.net/hiloki

120. Photo credit
- http://www.flickr.com/photos/bpotstra/3490333174/sizes/l/
- http://www.flickr.com/photos/bettybroadbent/3704523854/sizes/o/
- http://www.flickr.com/photos/drewmaughan/8209503226/sizes/l/
- http://www.flickr.com/photos/biodork/6849406792/
- http://www.flickr.com/photos/43266097@N03/9444574320/sizes/l/
- http://www.flickr.com/photos/90585146@N08/8234225693/sizes/l/
- http://www.flickr.com/photos/lwr/6778863776/sizes/l/
- http://www.flickr.com/photos/jezpage/4696962046/
- http://www.flickr.com/photos/april-mo/8485249298/sizes/l/
- http://www.flickr.com/photos/4st4roth/2366615948/
- http://www.flickr.com/photos/sharman/4570412801/sizes/l/
- http://www.flickr.com/photos/kaptainkobold/3771497484/
- http://www.flickr.com/photos/laurie_pink/2549598674/sizes/l/
- http://www.flickr.com/photos/dansdata/3266946102/
- http://www.flickr.com/photos/ochre_jelly/6839227477/sizes/l/
- http://www.flickr.com/photos/in-duce/2232109985/sizes/o/
- http://www.flickr.com/photos/pgoyette/5911926699/sizes/z/
- http://www.flickr.com/photos/conradoplg/10091603396/sizes/l/
- http://www.flickr.com/photos/kaptainkobold/4441509147/sizes/l/