CSS深入理解学习笔记之absolute
程序员文章站
2022-03-21 15:55:43
1、absolute和float 拥有相同的特性表现： ①包裹性（容器应用之后，可以包裹里面的内容）； ②破坏性（内容应用之后，会破坏父容器） 2、absolute和relative absolute和relative是分离的，对立的。父容器是relative，子元素是absolute，可以限制子元 ......
1、absolute和float
拥有相同的特性表现：
①包裹性（容器应用之后，可以包裹里面的内容）；
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <meta name="viewport" content="width=device-width">
6 <title>absolute的包裹性</title>
7 <style>
8 .box {
9 padding: 10px;
10 background-color: #f0f0f0;
11 }
12 input {
13 position: absolute; top: 234px;
14 width: 160px; height: 32px;
15 font-size: 100%;
16 }
17 </style>
18 </head>
19
20 <body>
21 <div id="box" class="box"><img src="http://img.mukewang.com/54447b06000171a002560191.jpg" width="256" height="191"></div>
22 <input id="button" type="button" value="容器absolute化">
23 <script>
24 var eleBox = document.getElementById("box"), eleBtn = document.getElementById("button");
25 if (eleBox != null && eleBtn != null) {
26 eleBtn.onclick = function() {
27 if (this.absolute) {
28 eleBox.style.position = "";
29 this.value = "容器absolute化";
30 this.absolute = false;
31 } else {
32 eleBox.style.position = "absolute";
33 this.value = "容器去absolute";
34 this.absolute = true;
35 }
36 };
37 }
38 </script>
39 </body>
40 </html>
②破坏性（内容应用之后，会破坏父容器）
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <meta name="viewport" content="width=device-width">
6 <title>absolute的破坏性</title>
7 <style>
8 .box {
9 padding: 10px;
10 background-color: #f0f0f0;
11 }
12 input {
13 position: absolute; top: 234px;
14 width: 160px; height: 32px;
15 font-size: 100%;
16 }
17 </style>
18 </head>
19
20 <body>
21 <div class="box"><img id="image" src="http://img.mukewang.com/54447b06000171a002560191.jpg" width="256" height="191"></div>
22 <input id="button" type="button" value="图片absolute化">
23 <script>
24 var eleImg = document.getElementById("image"), eleBtn = document.getElementById("button");
25 if (eleImg != null && eleBtn != null) {
26 eleBtn.onclick = function() {
27 if (this.absolute) {
28 eleImg.style.position = "";
29 this.value = "图片absolute化";
30 this.absolute = false;
31 } else {
32 eleImg.style.position = "absolute";
33 this.value = "图片去absolute";
34 this.absolute = true;
35 }
36 };
37 }
38 </script>
39 </body>
40 </html>
2、absolute和relative
absolute和relative是分离的，对立的。父容器是relative，子元素是absolute，可以限制子元素对父元素破坏性的影响。
独立的absolute可以摆脱overflow的限制，无论是滚动还是隐藏。
<div style = "overflow:scroll;">
<a href="javascript:void(0);" title="close" style="position:absolute;"></a>
<img src="img1.jpg" />
<img src="img2.jpg" />
</div>
3、无依赖的absolute定位
无依赖是指不受父元素relative限制的absolute定位，行为表现上是不使用top/right/bottom/left任何一个属性或使用auto作为值。
特性：①脱离文档流；
②位置跟随；
③去浮动（效果同上图）；
④IE7下会inline-block化（解决方案：在元素外层套一个空div标签）
4、absolute的实际应用
（1）图片图标绝对定位覆盖：
先来点小技巧，在实际开发中，为了好看标签一般都各占一行。为了消除不必要的空格，可以如下处理：
效果图：
实例代码：
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>图标定位二三事</title>
6 <style>
7 body { font: 14px/1.4 "Microsoft YaHei"; background-color: #EDEFF0; }
8 body, h3, h5 { margin: 0; }
9 img { border: 0 none; vertical-align: bottom; }
10 .l { float: left; }.r { float: right; }
11 .constr { width: 1200px; margin-left: auto; margin-right: auto; }
12 .header { background-color: #2A2C2E; }
13 .nav { height: 60px; }
14 .nav-list { float: left; font-size: 14px; font-weight: 400; }
15 .nav-a { display: inline-block; line-height: 20px; padding: 20px 35px; color: #B5BDC0; text-decoration: none; }
16 .nav-a:hover { color: #fff; }
17
18 .course { padding-top: 10px; }
19 .course-list { float: left; width: 280px; height: 240px; margin: 5px 10px 15px; border-radius: 0 0 1px 1px; background-color: #F7FAF9; background-color: rgba(255,255,255,1); box-shadow: 0 1px 2px #c5c5c5; text-decoration: none; }
20 .course-list-img { background-color: #6396F1; }
21 .course-list-h { line-height: 50px; font-size: 14px; font-weight: 400; color: #363d40; text-align: center; }
22 .course-list-tips { margin: 0 14px; font-size: 12px; color: #b4bbbf; overflow: hidden; }
23
24 .icon-hot { position: absolute; width: 28px; height: 11px; margin: -6px 0 0 2px; background: url(http://img.mukewang.com/545304730001307300280011.gif); }
25 .icon-recom { position: absolute; line-height: 20px; padding: 0 5px; background-color: #f60; color: #fff; font-size: 12px; }
26 .icon-vip { position: absolute; width: 36px; height: 36px; margin-left: -36px; background: url(http://img.mukewang.com/5453048000015d8800360036.gif); text-indent: -9em; overflow: hidden; }
27 </style>
28 </head>
29
30 <body>
31 <div class="header">
32 <div class="constr">
33 <div class="nav">
34 <h3 class="nav-list">
35 <a href="http://www.imooc.com/course/list" class="nav-a">课程</a>
36 </h3>
37 <h3 class="nav-list">
38 <a href="http://www.imooc.com/wenda" class="nav-a">问答</a>
39 </h3>
40 <h3 class="nav-list">
41 <a href="http://www.imooc.com/seek/index" class="nav-a">
42 求课<i class="icon-hot"></i>
43 </a>
44 </h3>
45 </div>
46 </div>
47 </div>
48
49 <div class="main">
50 <div class="constr">
51 <div class="course">
52 <a href="http://www.imooc.com/view/121" class="course-list">
53 <div class="course-list-img">
54 <span class="icon-recom">推荐</span>
55 <img width="280" height="160" alt="分享：CSS深入理解之float浮动" src="http://img.mukewang.com/53d74f960001ae9d06000338-300-170.jpg"><!--
56 --><i class="icon-vip">vip</i>
57 </div>
58 <h5 class="course-list-h">分享：CSS深入理解之float浮动</h5>
59 <div class="course-list-tips">
60 <span class="l">已完结</span>
61 <span class="r">3514人学习</span>
62 </div>
63 </a>
64 </div>
65 </div>
66 </div>
67 </body>
68 </html>
（2）下拉框定位最佳实践：
效果图：
实例代码：
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>下拉框定位二三事</title>
6 <style>
7 body { margin: 0; font: 14px/1.4 "Microsoft YaHei"; background-color: #EDEFF0; }
8 .constr { width: 1200px; max-width: 80%; margin-left: auto; margin-right: auto; padding-bottom: 300px; overflow: hidden; }
9 .course-sidebar { width: 262px; float: left; }
10 .course-sidebar > div { border: 1px solid #e6e8e9; box-shadow: 0px 1px 2px #d5d7d8; background-color: #fff; }
11 .course-sidebar-type { height: 380px; }
12 .course-sidebar-search { margin-top: 20px; overflow: hidden; }
13 .course-search-input { width: 200px; line-height: 18px; padding: 10px; margin: 0; border: 0 none; font-size: 12px; font-family: inherit; float: left; }
14 .course-sidebar-search.focus { border-color: #2ea7e0; }
15 .course-search-input:focus { outline: 0 none; }
16 .course-search-input::-ms-clear { display: none; }
17 .course-search-btn { width: 38px; height: 38px; float: right; background: url(http://img.mukewang.com/545305ba0001f3f600380076.png); text-indent: -9em; overflow: hidden; }
18 .focus .course-search-btn { background-position: 0 -38px; }
19
20 .course-sidebar-result { display: none; position: absolute; width: 260px; margin: 39px 0 0 -1px; padding-left: 0; list-style-type: none; border: 1px solid #e6e8e9; background-color: #fff; box-shadow: 0px 1px 2px #d5d7d8; font-size: 12px; }
21 .course-sidebar-result > li { line-height: 30px; padding-left: 12px; }
22 .course-sidebar-result > li:hover { background-color: #f9f9f9; }
23 .course-sidebar-result a { display: block; color: #5e5e5e; text-decoration: none; }
24 .course-sidebar-result a:hover { color: #000; }
25 </style>
26 </head>
27
28 <body>
29 <div class="constr">
30 <div class="course-sidebar">
31 <div class="course-sidebar-type"></div>
32 <div class="course-sidebar-search">
33 <ul id="result" class="course-sidebar-result">
34 <li><a href="http://www.imooc.com/view/121">分享：CSS深入理解之float浮动</a></li>
35 <li><a href="http://www.imooc.com/view/118">案例：CSS圆角进化论</a></li>
36 <li><a href="http://www.imooc.com/view/93">案例：CSS Sprite雪碧图应用</a></li>
37 <li><a href="http://www.imooc.com/view/77">案例：CSS3 3D 特效</a></li>
38 <li><a href="http://www.imooc.com/view/57">案例：如何用CSS进行网页布局</a></li>
39 </ul>
40 <input class="course-search-input" placeholder="课程搜索">
41 <a href="javascript:" class="course-search-btn">搜索</a>
42 </div>
43 </div>
44 </div>
45 <script>
46 (function() {
47 var input = document.getElementsByTagName("input")[0],
48 result = document.getElementById("result");
49
50 if (input && result) {
51 input.onfocus = function() {
52 this.parentNode.className = "course-sidebar-search focus";
53 if (this.value != "") {
54 // show datalist
55 result.style.display = "block";
56 }
57 };
58 input.onblur = function() {
59 if (this.value == "") {
60 this.parentNode.className = "course-sidebar-search";
61 }
62 // hide datalist
63 result.style.display = "none";
64 };
65
66 // IE7 that wrap a DIV for avoid bad effect from float
67 if (!document.querySelector) {
68 var div = document.createElement("div");
69 input.parentNode.insertBefore(div, input);
70 div.appendChild(result);
71 }
72 // events of datalist
73 if ("oninput" in input) {
74 input.addEventListener("input", function() {
75 if (this.value.trim() != "") {
76 result.style.display = "block";
77 } else {
78 result.style.display = "none";
79 }
80 });
81 } else {
82 // IE6-IE8
83 input.onpropertychange = function(event) {
84 event = event || window.event;
85 if (event.propertyName == "value" && /focus/.test(this.parentNode.className)) {
86 if (this.value != "") {
87 result.style.display = "block";
88 } else {
89 result.style.display = "none";
90 }
91 }
92 }
93 }
94 }
95
96 })();
97 </script>
98 </body>
99 </html>
（3）居中以及边缘对齐定位：
效果图：
实例代码：
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>居中、边缘定位二三事</title>
6 <style>
7 body { margin: 0; font: 14px/1.4 "Microsoft YaHei"; background-color: #EDEFF0; }
8 .constr { width: 1200px; max-width: 80%; margin-left: auto; margin-right: auto; }
9 .course-content { float: right; position: relative; width: 920px; min-height: 1200px; background: #fff; }
10 .course-list-x { padding: 20px 10px; overflow: hidden; }
11 .course-list { float: left; width: 280px; height: 240px; margin: 5px 10px 15px; border-radius: 0 0 1px 1px; background-color: #F7FAF9; background-color: rgba(255,255,255,1); box-shadow: 0 1px 2px #c5c5c5; text-decoration: none; }
12
13 .goto_top_diaocha, .goto_top_app, .goto_top_feed { display: block; width: 48px; height: 48px; margin-top: 10px; background: url(http://img.mukewang.com/5453076e0001869c01920098.png) no-repeat; }
14 .goto_top_diaocha { background-position: -48px 0; }
15 .goto_top_diaocha:hover { background-position: -48px -50px; }
16 .goto_top_app { background-position: -96px 0; }
17 .goto_top_app:hover { background-position: -96px -50px; }
18 .goto_top_feed { background-position: -144px 0; }
19 .goto_top_feed:hover { background-position: -144px -50px; }
20
21 .course-loading-x { height: 0; margin-top: 20px; text-align: center; letter-spacing: -.25em; overflow: hidden; }
22 .course-loading { position: absolute; margin-left: -26px; }
23
24 .course-fixed-x { height: 0; text-align: right; overflow: hidden; }
25 .course-fixed { display: inline; position: fixed; margin-left: 20px; bottom: 100px; }
26 </style>
27 </head>
28
29 <body>
30 <div class="constr">
31 <div class="course-content">
32 <div class="course-list-x">
33 <div class="course-list"></div>
34 <div class="course-list"></div>
35 <div class="course-list"></div>
36 <div class="course-list"></div>
37 <div class="course-list"></div>
38 <div class="course-list"></div>
39 </div>
40 <div class="course-loading-x">
41 <img src="http://img.mukewang.com/5453077400015bba00010001.gif" class="course-loading" alt="加载中...">
42 </div>
43 <div class="course-fixed-x">
44 <div class="course-fixed">
45 <a href="http://www.imooc.com/activity/diaocha" class="goto_top_diaocha"></a>
46 <a href="http://www.imooc.com/mobile/app" class="goto_top_app"></a>
47 <a href="http://www.imooc.com/user/feedback" class="goto_top_feed"></a>
48 </div>
49 </div>
50 </div>
51 </div>
52 </body>
53 </html>
（4）各种对齐溢出技巧实例：
效果图：
实例代码：
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>文本图标对齐与定位二三事</title>
6 <style>
7 body { margin: 0; font: 14px/1.4 "Microsoft YaHei"; background-color: #EDEFF0; }
8 a { color: #50B6E5; }
9 .constr { width: 1200px; margin-left: auto; margin-right: auto; }
10 .regist-head { height: 60px; line-height: 60px; padding-left: 30px; background-color: #be3948; color: #fff; font-size: 18px; }
11 .regist-body { min-height: 400px; padding: 100px 0; background-color: #fff; }
12 .regist-main { width: 600px; margin-left: auto; margin-right: auto; }
13 .regist-group { margin-top: 20px; overflow: hidden; }
14 .regist-label { width: 70px; padding-top: 10px; float: left; }
15 .regist-cell { display: table-cell; *display: inline-block; }
16 .regist-input { height: 18px; line-height: 18px; width: 260px; padding: 10px 5px; margin: 0 10px 0 0; border: 1px solid #d0d6d9; vertical-align: top; }
17 .regist-code-input { width: 130px; }
18 .regist-btn { display: inline-block; width: 160px; line-height: 40px; background-color: #39b94e; color: #fff; text-align: center; text-decoration: none; }
19 .regist-btn:hover { background-color: #33a646; }
20 .icon-warn { display: inline-block; width: 20px; height: 21px; background: url(http://img.mukewang.com/5453084a00016ae300120012.gif) no-repeat center; }
21
22 .regist-star { position: absolute; margin-left: -1em; font-family: simsun; color: #f30; }
23 .regist-remark { position: absolute; line-height: 21px; padding-top: 9px; color: #666; }
24 .regist-warn { padding-left: 20px; color: #be3948; }
25 .regist-warn > .icon-warn { position: absolute; margin-left: -20px; }
26 </style>
27 </head>
28
29 <body>
30 <div class="constr">
31 <div class="regist-head">注册</div>
32 <div class="regist-body">
33 <div class="regist-main">
34 <div class="regist-group">
35 <label class="regist-label"><span class="regist-star">*</span>登录邮箱</label>
36 <div class="regist-cell">
37 <input type="email" class="regist-input"><span class="regist-remark regist-warn">
38 <i class="icon-warn"></i>邮箱格式不准确（演示）
39 </span>
40 </div>
41 </div>
42 <div class="regist-group">
43 <label class="regist-label"><span class="regist-star">*</span>登录密码</label>
44 <div class="regist-cell">
45 <input type="password" class="regist-input"><span class="regist-remark">
46 请输入6-16位密码，区分大小写，不能使用空格
47 </span>
48 </div>
49 </div>
50 <div class="regist-group">
51 <label class="regist-label"><span class="regist-star">*</span>用户昵称</label>
52 <div class="regist-cell">
53 <input type="password" class="regist-input">
54 </div>
55 </div>
56 <div class="regist-group">
57 <label class="regist-label">手机号码</label>
58 <div class="regist-cell">
59 <input type="tel" class="regist-input">
60 </div>
61 </div>
62 <div class="regist-group">
63 <label class="regist-label"><span class="regist-star">*</span>验 证 码</label>
64 <div class="regist-cell">
65 <input class="regist-input regist-code-input"><img src="http://img.mukewang.com/545308540001678401500040.jpg">
66 </div>
67 </div>
68 <div class="regist-group">
69 <label class="regist-label"> </label>
70 <div class="regist-cell">
71 <input type="checkbox" checked><label>我已阅读并同意<a href="##">慕课协议</a>。</label>
72 <p>
73 <a href="javascript:" class="regist-btn">立即注册</a>
74 </p>
75 </div>
76 </div>
77 </div>
78 </div>
79 </div>
80 </body>
81 </html>
5、absolute和层级
absolute具有脱离文档流的特性，因此有一些不成文的规定：
动画尽量作用在绝对定位元素上！
绝对定位元素的层级规律：
仅有一个绝对定位元素，则它会覆盖普通元素； 如果两个绝对定位元素，后来居上； 如果多个绝对定位元素，使用z-index：1控制； 若非弹窗类的绝对定位元素z-index>2是非常少见的，很有可能是冗余了，需要优化。6、absolute和定位属性（top/right/bottom/left）
定位属性是相对于就近父级元素position为relative/absolute/fixed/sticky的元素进行定位的； 若只有一个定位属性，元素的位置会受到兄弟元素的影响。7、top/right/bottom/left和width/height
相互替代性（例如：{position:absolute;width:100%;height:100%}=={position:absolute;top:0;right:0;bottom:0;left:0;})，这个特性只有IE7+浏览器支持；
相互支持性：
①容器无需固定width/height值，内部元素也可以拉伸；
②容器拉伸，内部元素支持百分比width/height值（注：元素百分比height想要起作用，父元素height不能是auto）；
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <title>高度自适应的九宫格效果</title>
6 <style>
7 html, body { height: 100%; margin: 0; }
8 .page {
9 position: absolute;
10 left: 0; top: 0; right: 0; bottom: 0;
11 }
12 .list {
13 float: left;
14 height: 33.3%; width: 33.3%;
15 position: relative;
16 }
17 .list:before {
18 content: '';
19 position: absolute;
20 left: 10px; right: 10px; top: 10px; bottom: 10px;
21 border-radius: 10px;
22 background-color: #cad5eb;
23 }
24 .list:after {
25 content:attr(data-index);
26 position: absolute;
27 height: 30px;
28 left: 0; right: 0; top: 0; bottom: 0;
29 margin: auto;
30 text-align: center;
31 font: 24px/30px bold 'microsoft yahei';
32 }
33 </style>
34 </head>
35
36 <body>
37 <div class="page">
38 <div class="list" data-index="1"></div>
39 <div class="list" data-index="2"></div>
40 <div class="list" data-index="3"></div>
41 <div class="list" data-index="4"></div>
42 <div class="list" data-index="5"></div>
43 <div class="list" data-index="6"></div>
44 <div class="list" data-index="7"></div>
45 <div class="list" data-index="8"></div>
46 <div class="list" data-index="9"></div>
47 </div>
48 </body>
49 </html>
相互合作性：margin:auto的情况下，width/height影响尺寸，top/right/bottom/left影响位置。这个特性需要IE8+浏览器的支持。
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>left/right拉伸和width同时存在</title>
<style>
.image {
position: absolute; left: 0; right: 0; width: 50%;
}
.button {
padding-top: 200px;
}
.button input {
width: 280px; height: 40px;
font-size: 20px;
}
</style>
</head>
<body>
<img class="image" src="http://img.mukewang.com/547c34c9000171a002560191.jpg" height="191">
<p class="button">
<input type="button" value="添加margin: auto;" onClick="document.getElementsByTagName('img')[0].style.margin = 'auto';">
</p>
</body>
</html>
8、absolute和移动web布局
（1）body降级，子元素升级：
升级的子div满屏：{position:absolute;top:0;right:0;bottom:0;left:0;}
子div满屏前提：html,body{height:100%;}
（2）各模块-头尾、侧边栏（PC端）各居其位
1 header,footer{position:absolute;left:0;right:0;}
2 heder{height:48px;top:0;}
3 footer{height:52px;bottom:0;}
4
5 aside{
6 width:250px;
7 position:absolute;left:0;top:0;bottom:0;
8 }
（3）内容区域想象成body
1 .content{
2 position:absolute;
3 top:48px;bottom:52px;
4 left:250px; //如果有侧边栏
5 overflow:auto;
6 }
此时的头尾部以及侧边栏都是fixed效果。避免了移动端position:fixed实现的诸多问题。
（4）全屏覆盖与page平级
1 .overlay{
2 position:absolute;
3 top:0;right:0;bottom:0;left:0;
4 background-color:rgba(0,0,0,.5);
5 z-index:9;
6 }
1 <div class="page"></div> 2 <div class="overlay"></div>
（5）实例效果
PC：
手机：
实例代码：
1 <!doctype html>
2 <html>
3 <head>
4 <meta charset="utf-8">
5 <meta name="viewport" content="width=device-width,initial-scale=1.0,user-scalable=no">
6 <title>慕课网-绝对定位整页布局演示</title>
7 <link rel="stylesheet" href="absolute.css">
8 <style>
9 body { font-family: 'microsoft yahei'; }
10 </style>
11 </head>
12
13 <body>
14 <div class="page">
15 <div class="header">
16 <h1>慕课网</h1>
17 <a href="javascript:" class="icon-add">添加</a>
18 <a href="javascript:" class="icon-search">搜索</a>
19 </div>
20 <div class="content">
21 <div class="">
22 <a href="http://www.imooc.com/learn/192" class="wechat-list">
23 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
24 <div class="cell">
25 <div class="wechat-h-time"><h5>张鑫旭</h5><time>早上09:51</time></div>
26 <p>CSS深入理解值绝对定位</p>
27 </div>
28 </a>
29 <a href="http://www.imooc.com/learn/192" class="wechat-list">
30 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
31 <div class="cell">
32 <div class="wechat-h-time"><h5>张鑫旭</h5><time>早上09:38</time></div>
33 <p>如果高度不够，可以手动缩小浏览器高度</p>
34 </div>
35 </a>
36 <a href="http://www.imooc.com/learn/192" class="wechat-list">
37 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
38 <div class="cell">
39 <div class="wechat-h-time"><h5>张鑫旭</h5><time>早上08:47</time></div>
40 <p>此demo是本系列最后一个demo</p>
41 </div>
42 </a>
43 <a href="http://www.imooc.com/learn/192" class="wechat-list">
44 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
45 <div class="cell">
46 <div class="wechat-h-time"><h5>张鑫旭</h5><time>早上08:36</time></div>
47 <p>此demo需要在高级浏览器中查看</p>
48 </div>
49 </a>
50 <a href="http://www.imooc.com/learn/192" class="wechat-list">
51 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
52 <div class="cell">
53 <div class="wechat-h-time"><h5>张鑫旭</h5><time>昨天</time></div>
54 <p>重在原理展示，结构可多变。例如，header放在page外面~~</p>
55 </div>
56 </a>
57 <a href="https://github.com/zhangxinxu/mobilebone" class="wechat-list">
58 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
59 <div class="cell">
60 <div class="wechat-h-time"><h5>张鑫旭</h5><time>昨天</time></div>
61 <p>最近鄙人整了个名叫Mobilebone的开源项目</p>
62 </div>
63 </a>
64 <a href="https://github.com/zhangxinxu/mobilebone" class="wechat-list">
65 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
66 <div class="cell">
67 <div class="wechat-h-time"><h5>张鑫旭</h5><time>星期三</time></div>
68 <p>就是依赖绝对定位整体布局，大家可以前去围观</p>
69 </div>
70 </a>
71 <a href="http://www.imooc.com/learn/192" class="wechat-list">
72 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
73 <div class="cell">
74 <div class="wechat-h-time"><h5 class="business">慕课网</h5><time>星期三</time></div>
75 <p><img src="http://img.mukewang.com/547d33a00001299b00320033.jpg" width="16" height="16"></p>
76 </div>
77 </a>
78 <a href="http://www.imooc.com/learn/121" class="wechat-list">
79 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
80 <div class="cell">
81 <div class="wechat-h-time"><h5>张鑫旭</h5><time>星期三</time></div>
82 <p>CSS深入理解之浮动</p>
83 </div>
84 </a>
85 <a href="http://www.imooc.com/learn/121" class="wechat-list">
86 <img src="http://img.mukewang.com/547d338d00010ced01200120.jpg">
87 <div class="cell">
88 <div class="wechat-h-time"><h5>张鑫旭</h5><time>上周</time></div>
89 <p>同样精彩，欢迎支持~</p>
90 </div>
91 </a>
92 </div>
93 </div>
94
95 <div class="footer">
96 <a href="http://www.imooc.com/course/list">
97 <i class="icon-wechat"></i>课程
98 </a>
99 <a href="http://www.imooc.com/wenda">
100 <i class="icon-contacts"></i>问答
101 </a>
102 <a href="http://www.imooc.com/seek/index">
103 <i class="icon-finds"></i>求课
104 </a>
105 <a href="http://www.imooc.com/space/course" class="active">
106 <i class="icon-mes"></i>我的课程
107 </a>
108 </div>
109 </div>
110 </body>
111 </html>
1 /* wechat.css */
2 body {
3 margin: 0;
4 -webkit-user-select: none;
5 user-select: none;
6 -ms-touch-action: none;
7 }
8
9 /* construction */
10 html, body, .page {
11 height: 100%; width: 100%;
12 overflow: hidden;
13 }
14 .page {
15 position: absolute; left: 0; top: 0;
16 }
17 body { background-color: #ebebeb; font-family: "Helvetica Neue", Helvetica, STHeiTi, sans-serif; }
18 a { text-decoration: none; -webkit-tap-highlight-color: rgba(0,0,0,0); }
19 h1,h2,h3,h4,h5,h6{ margin: 0; font-weight: 400; }
20 ul,ol{ margin: 0; list-style-type: none; }
21
22 .header, .footer, .content { position: absolute; left: 0; right: 0; }
23 .header { height: 48px; padding: 0 5px; background-color: #21292B; color: #fff; top: 0; z-index: 1; }
24 .header > h1 { line-height: 48px; margin: 0 0 0 10px; font-size: 18px; float: left; }
25 .header > a { display: inline-block; width: 48px; height: 48px; background-size: 48px 144px; text-indent: -9em; overflow: hidden; }
26 .header > .icon-search, .header > .icon-add { float: right; }
27 .footer { height: 52px; border-top: 1px solid #dfdfdf; background-color: #fcfcfc; bottom: 0; z-index: 1; }
28 .footer > a { width: 25%; text-align: center; color: #999; float: left; font-size: 14px; }
29 .footer > a > i { display: block; height: 35px; margin-bottom: -3px; background-size: 35px 280px; }
30 .footer > .active { color: #45c018; }
31 .content { top: 48px; bottom: 53px; overflow: auto; }
32
33 .icon-search, .icon-back, .icon-add { background: url(http://img.mukewang.com/547d339b000188bb00960288.png) no-repeat; }
34 .icon-back { background-position: 0 -96px; }
35 .icon-add { background-position: 0 -48px; }
36 .icon-wechat, .icon-contacts, .icon-finds, .icon-mes { background: url(http://img.mukewang.com/547d33970001444d00700560.png) no-repeat center top; }
37 .active .icon-wechat { background-position: center -35px; }
38 .icon-contacts { background-position: center -70px; }
39 .active .icon-contacts { background-position: center -105px; }
40 .icon-finds { background-position: center -140px; }
41 .active .icon-finds { background-position: center -175px; }
42 .icon-mes { background-position: center -210px; }
43 .active .icon-mes { background-position: center -245px; }
44 .icon-find { background: url(icon-find.png) no-repeat; background-size: 28px 210px; }
45 .icon-find-2 { background-position: 0 -30px; }
46 .icon-find-3 { background-position: 0 -60px; }
47 .icon-find-4 { background-position: 0 -90px; }
48 .icon-find-5 { background-position: 0 -120px; }
49 .icon-find-6 { background-position: 0 -150px; }
50 .icon-find-7 { background-position: 0 -180px; }
51 .icon-me { background: url(icon-me.png) no-repeat; background-size: 28px 120px; }
52 .icon-me-2 { background-position: 0 -30px; }
53 .icon-me-3 { background-position: 0 -60px; }
54 .icon-me-4 { background-position: 0 -90px; }
55
56
57 .wechat-list { display: block; height: 64px; padding: 8px 12px; box-sizing: border-box; border-bottom: 1px solid #d7d7d7; background-color: #fff; }
58 .wechat-list:last-child { border-bottom: 0; }
59 .wechat-list > img { width: 48px; height: 48px; float: left; }
60 .wechat-list > .cell { padding-left: 58px; line-height: 24px; color: #333; }
61 .wechat-h-time { overflow: hidden; }
62 .wechat-h-time > h5 { font-size: 100%; float: left; }
63 .wechat-h-time > time { font-size: 12px; color: #b9b9b9; float: right; }
64 .wechat-h-time .business { color: #54688D; }
65 .wechat-h-time + p { margin: 0 20px 0 0; font-size: 14px; color: #a8a8a8; white-space: nowrap; text-overflow: ellipsis; overflow: hidden; }
66 .wechat-detail { position: relative; z-index: 1; }
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