-
Notifications
You must be signed in to change notification settings - Fork 6
/
the-beauty-of-center-in-CSS.html
342 lines (276 loc) · 12.8 KB
/
the-beauty-of-center-in-CSS.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
<!doctype html>
<html lang="zh-cmn-Hans">
<head>
<meta charset="utf-8">
<!-- <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" /> -->
<title>CSS 居中之美</title>
<meta name="author" content="yisi">
<meta name="apple-mobile-web-app-capable" content="yes" />
<meta name="apple-mobile-web-app-title" content="CSS居中之美">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
<meta name ="viewport" content ="initial-scale=1, maximum-scale=3, minimum-scale=1, minimal-ui">
<link rel="stylesheet" href="css/reveal.min.css">
<link rel="stylesheet" href="css/theme/default.css" id="theme">
<!-- For syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<!-- If the query includes 'print-pdf', use the PDF print sheet -->
<script>
document.write( '<link rel="stylesheet" href="css/print/' + ( window.location.search.match( /print-pdf/gi ) ? 'pdf' : 'paper' ) + '.css" type="text/css" media="print">' );
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
<style>
.summary .line{
overflow: hidden;
white-space: nowrap;
}
.summary .line a {
display: table-cell;
vertical-align: middle;
width: 180px;
text-align: center;
}
.summary .content{
display: table-cell;
vertical-align: middle;
padding-left: 20px;
text-align: left;
overflow: hidden;
*zoom:1;
}
.powered {
position: fixed;
left: 20px;
bottom: 20px;
color: #555;
}
.powered p {
margin: 6px auto;
}
.powered a {
color: #555;
}
</style>
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section data-background-transition="slide" data-background="img/banner.jpg" >
<h1>CSS 居中之美</h1>
<p>
<a href="http://www.iyunlu.com/view" traget="blank">一丝</a>
<br>
2013-12-28 于南京
</p>
</section>
<section>
<h2>巴黎戴高乐广场</h2>
<p>
<img src="img/1947.jpg" alt="">
</p>
</section>
<section>
<h2>关于我</h2>
<div class="summary">
<div class="line">
<a href="http://weibo.com/jieorlin/" target="_blank"><img src="img/av.jpg" alt=""></a>
<div class="content">
<h3 class="user-name">一丝：</h3>
<p>阿里巴巴前端工程师</p>
</div>
</div>
<div class="line">
<a href="http://weibo.com/fekb" target="_blank"><img src="http://tp1.sinaimg.cn/3244329632/180/40023910983/0" alt=""></a>
<div class="content">
<p>「前端快爆」作者</p>
</div>
</div>
<ul>
<li>博客：<a href="http://www.iyunlu.com/view">http://www.iyunlu.com/view</a></li>
<li>微博：<a href="http://t.qq.com/yisibl">http://t.qq.com/yisibl</a></li>
</ul>
</div>
</section>
<section>
<h2>你想到了什么？</h2>
<h3>margin: auto?</h3>
</section>
<section>
<h2>常见居中方法</h2>
<h3>水平居中</h3>
<pre><code data-css contenteditable>
.demo{
text-align: center;
margin: auto;
position: absolute;
left: 50%;
margin-left: -?px;
}
</code></pre>
</section>
<section>
<h2>常见居中方法</h2>
<h3>垂直居中</h3>
<pre><code data-css contenteditable>
.demo{
height: 30px;
line-height: 30px;
display: table-cell;
vertical-align: middle;
position: absolute;
top: 50%;
margin-top: -?px;
}
</code></pre>
</section>
<section>
<h2>还有其他方法吗？</h2>
<h3>CSS3？</h3>
</section>
<section>
<h2>CSS3 居中</h2>
<h3><a href="http://www.w3.org/html/ig/zh/css-flex-1/">display: flex</a></h3>
<iframe class="page" id="result" src="http://jsbin.com/iMAdiru/1/edit"></iframe>
</section>
<section>
<h2>CSS 居中未来</h2>
<ul>
<li>水平居中 <a href="http://dev.w3.org/csswg/css-box/#alignment">alignment: center</a>
<pre><code data-css>
P {alignment: center;}
</code></pre>
</li>
<li>垂直居中 <a href="http://dev.w3.org/csswg/css-box/#child-align">child-align: middle</a>
<pre><code data-css>
P {child-align: middle;}
</code></pre>
</li>
<li><a href="http://dev.w3.org/csswg/css-position/#center">position:center;</a></li>
</ul>
</section>
<section>
<h2>CSS基础理论</h2>
<h3>盒模型(<a href="http://dev.w3.org/csswg/css-ui/#box-sizing0">box-sizing</a>)</h3>
<ul>
<li>border-box</li>
<li>content-box</li>
<li>pading-box</li>
</ul>
<p>不同盒模型对应的设计思路是什么？</p>
</section>
<section>
<h2>CSS基础理论</h2>
<h3>盒模型(box-sizing)</h3>
<iframe class="page" id="result" src="http://jsbin.com/utizEmA/2/edit"></iframe>
</section>
<section>
<h2>前端基础理论</h2>
<h3>定位体系</h3>
<ol>
<li><a href="http://www.w3.org/html/ig/zh/wiki/CSS2/visuren#normal-flow">普通流(Normal flow)</a>
<ul>
<li><a href="http://www.w3.org/html/ig/zh/wiki/CSS2/visuren#block-formatting">块级格式化上下文(Block formatting contexts)</a></li>
<li><a href="http://www.w3.org/html/ig/zh/wiki/CSS2/visuren#inline-formatting">行内格式化上下文(Inline formatting contexts)</a></li>
<li>position: relative;</li>
</ul>
</li>
<li><a href="http://www.w3.org/html/ig/zh/wiki/CSS2/visuren#floats">浮动(Floats)</a></li>
<li><a href="http://www.w3.org/html/ig/zh/wiki/CSS2/visuren#absolute-positioning">绝对定位(Absolute positioning)</a>
<ul>
<li>position: absolute;</li>
<li>position: fixed;</li>
</ul>
</li>
</ol>
</section>
<section>
<h2>前端基础理念</h2>
<h3>前端的本质工作是「还原设计」</h3>
<p>而CSS是设计意图的最终实现</p>
<ol>
<li>三层分离（内容，表现，行为）</li>
<li><a href="http://en.wikipedia.org/wiki/Graceful_degradation">优雅降级(Graceful Degradation),1994</a></li>
<li><a href="http://www.hesketh.com/thought-leadership/our-publications/inclusive-web-design-future">渐进增强(Progressive Enhancement),2003</a></li>
</ol>
</section>
<section>
<h2>居中设计实例</h2>
<p>如何更好的还原设计？</p>
</section>
<section>
<h2>居中设计实例</h2>
<h3>图文混排</h3>
<iframe class="page" id="result" src="http://jsbin.com/atEGaCun/1/edit"></iframe>
</section>
<section>
<h2>居中设计实例</h2>
<h3>未知高度图片绝对居中</h3>
<iframe class="page" id="result" src="http://codepen.io/yisi/embed/avptB?height=584&theme-id=3324&slug-hash=avptB&user=yisi&default-tab=result"></iframe>
</section>
<section>
<h2>居中设计实例</h2>
<h3>水平分割线</h3>
<iframe class="page" id="result" src="http://jsbin.com/eyeWILo/3/edit?css,output"></iframe>
</section>
<section>
<h2>居中设计实例</h2>
<h3>绝对定位元素居中</h3>
<iframe class="page" id="result" src="http://jsbin.com/udeqig/22/edit"></iframe>
</section>
<section>
<h2>居中设计实例</h2>
<h3>绝对定位 + transform</h3>
<iframe class="page" id="result" src="http://jsbin.com/INISaYen/1/edit?css,output"></iframe>
</section>
<section>
<h2>误区</h2>
<ol>
<li>滥用 float 布局</li>
<li>使用空标签闭合浮动</li>
<li>用 <br> 控制垂直间距</li>
<li>用 &nbsp; 控制字间距(两端对齐布局等)</li>
<li>直接在标签上用 style 属性写样式</li>
<li>随意甚至使用拼音给 Class，ID 命名</li>
<li>多 Class 症(滥用 OOCSS)</li>
</ol>
</section>
<section>
<h2>亲~说点啥吧</h2>
<h3>Thank You ^_^ </h3>
</section>
</div>
</div>
<div class="powered">
<p>CSS 居中之美</p>
<p>Powered by <a href="https://github.com/hakimel/reveal.js/" target="_blank">reveal.js</a></p>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.min.js"></script>
<script>
// Full list of configuration options available here:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
theme: Reveal.getQueryHash().theme, // available themes are in /css/theme
transition: Reveal.getQueryHash().transition || 'default', // default/cube/page/concave/zoom/linear/fade/none
// Parallax scrolling
// parallaxBackgroundImage: 'https://s3.amazonaws.com/hakim-static/reveal-js/reveal-parallax-1.jpg',
// parallaxBackgroundSize: '2100px 900px',
// Optional libraries used to extend on reveal.js
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true, condition: function() { return !!document.body.classList; } },
{ src: 'plugin/notes/notes.js', async: true, condition: function() { return !!document.body.classList; } }
]
});
</script>
</body>
</html>