DIV 上下居中用 line-height
- <style type="text/css">
- div.v-align {
- line-height: 200px;
- height: 200px;
- border: 1px solid red;
- }
- </style>
-
- <div class="v-align">
- 垂直居中
- </div>
例子1:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="/1999/xhtml" xml:lang="en">
- <head>
- <title>AgiCRM</title>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="demo" content="Demo" />
- <meta name="demo" content="demo" />
- <style type="text/css">
- div.v-align {
- line-height: 200px;
- height: 200px;
- border: 1px solid red;
- }
- </style>
- <!--[if IE]>
-
- <![endif]-->
- </head>
- <body>
- <div class="v-align">
- 垂直居中
- </div>
- </body>
- </html>
清除浏览器默认样式
1.用其他有名的库来清除(如:YUI)
2.自已清除
如:
* {
padding: 0;
margin:0;
}
让A支持所有浏览器
- <style type="text/css">
- a.agideo:link, a.agideo:visited {
- font-weight: bold;
- text-decoration: none;
- color: green;
- }
- a.agideo:hover, a.agideo:active {
- font-weight: bold;
- text-decoration: none;
- color: red;
- }
- </style>
-
- <a href="" class="agideo">捷道数码</a>
- <style type="text/css">
- a.google:hover, a.google:active {
- font-weight: bold;
- text-decoration: none;
- color: red;
- }
- a.google:link, a.google:visited {font-weight: bold;
- text-decoration: none;
- color: green;
- }
- </style>
- <a href="http://www.google.com" class="google">Google</a>
例子2:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="/1999/xhtml" xml:lang="en">
- <head>
- <title>AgiCRM</title>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="demo" content="Demo" />
- <meta name="demo" content="demo" />
- <style type="text/css">
- a.agideo:link, a.agideo:visited {
- font-weight: bold;
- text-decoration: none;
- color: green;
- }
- a.agideo:hover, a.agideo:active {
- font-weight: bold;
- text-decoration: none;
- color: red;
- }
- a.google:hover, a.google:active {
- font-weight: bold;
- text-decoration: none;
- color: red;
- }
- a.google:link, a.google:visited {
- font-weight: bold;
- text-decoration: none;
- color: green;
- }
- </style>
- <!--[if IE]>
-
- <![endif]-->
- </head>
- <body>
- <a href="" class="agideo">捷道数码</a>
- <a href="http://www.google.com" class="google">Google</a>
- </body>
- </html>
A 伪类定义顺序记忆法
LoVe:HAte(爱恨)
IMG vertical-align
vertical-align : auto | baseline | sub | super | top | text-top | middle | bottom | text-bottom | length
baseline :默认值。将支持 valign 特性的对象的内容与基线对齐
sub 垂直对齐文本的下标
super 垂直对齐文本的上标
top : 将支持 valign 特性的对象的内容对象顶端对齐
text-top : 将支持 valign 特性的对象的文本与对象顶端对齐
middle : 将支持 valign 特性的对象的内容与对象中部对齐
bottom : 将支持 valign 特性的对象的内容与对象底端对齐
text-bottom : 将支持 valign 特性的对象的文本与对象顶端对齐
length : 由浮点数字和单位标识符组成的长度值 | 百分数。可为负数。定义由基线算起的偏移量。基线对于数值来说为0,对于百分数来说就是0%。请参阅 长度单位 。目前IE尚未实现此参数
例子3:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="/1999/xhtml" xml:lang="en">
- <head>
- <title>AgiCRM</title>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="demo" content="Demo" />
- <meta name="demo" content="demo" />
- <style type="text/css">
- div.v-align {
- border: 1px solid red;
- line-height: 40px;
- float: left;
- font-size: 11px;
- height: 40px;
- }
- div.v-align img.only-img {
- float:left;
- }
- div.v-align.has-img {
- padding-top: 10px;
- height: 30px;
- }
-
- div.v-align.has-img-and-text img.has-text {
- vertical-align: -4px !important;
- vertical-align: middle;
- margin-top: -3px !important;
- margin-top: 0px;
- }
- div.v-align.has-img-and-text {
- padding-top: 0px !important;
- padding-top: 10px;
- height: 40px !important;
- height: 30px;
- }
- </style>
- <!--[if IE]>
-
- <![endif]-->
- </head>
- <body>
- <div class="v-align">
- 正常
- </div>
- <div class="v-align has-img">
- <img src="/upload/attachment/162320/1f89f269-580c-304b-975a-e6004b9893ce.png" class="only-img" />
- </div>
- <div class="v-align has-img-and-text">
- <img src="./accept.png" align="absmiddle" class="has-text" />有图片有字
- </div>
- </body>
- </html>
垂直 Margin 叠加
例子4:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="/1999/xhtml" xml:lang="en">
- <head>
- <title>AgiCRM</title>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="demo" content="Demo" />
- <meta name="demo" content="demo" />
- <style tyep="text/css">
- body, div {
- padding:0;
- margin:0;
- }
- div, span {
- padding: 10px;
- margin: 10px;
- border: 10px solid #000;
- }
- #div1 {
- background-color: red;
- }
- #div2 {
- background-color: green;
- }
- #div3 {
- background-color: blue;
- }
- </style>
- <!--[if IE]>
-
- <![endif]-->
- </head>
- <body>
- <div id="div1">
- <div>div1</div>
- </div>
- <div id="div2">
- <div>div2</div>
- </div>
- <div id="div3">
- <span>span1</span>
- <span>span2</span>
- </div>
- </body>
- </html>
Background position
例子5:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="/1999/xhtml" xml:lang="en">
- <head>
- <title>AgiCRM</title>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="demo" content="Demo" />
- <meta name="demo" content="demo" />
- <style tyep="text/css">
- body, div {
- padding:0;
- margin:0;
- }
- div {
- border:1px solid #ccc;
- height: 200px;
- width: 300px;
- }
- #div1 {
- background: url(/upload/attachment/162316/eee477c8-1fcc-3a41-874f-065f0d65a422.jpg) no-repeat 20px 20px;
- }
- #div2 {
- background: url/upload/attachment/162316/eee477c8-1fcc-3a41-874f-065f0d65a422.jpg) no-repeat 20% 20%;
- }
- #div3 {
- background: url(/upload/attachment/162318/8be0e495-2d0a-3ec2-9f5f-7465eb8c23ae.jpg) no-repeat 20% 20%;
- }
- </style>
- <!--[if IE]>
-
-
- <![endif]-->
- </head>
- <body>
- <div id="div1">
- 20px
- </div>
- <br/>
- <div id="div2">
- 20%
- </div>
- <br/>
- <div id="div3">
- 20%
- </div>
- </body>
- </html>
Float 占地问题
1.父子TAG都Float以父能包含子
- <style type="text/css">
- div.parent {
- border: 1px solid red;
- width: 600px;
- float: left; /* For round child */
- }
- div.child {
- border: 1px solid green;
- float: left;
- }
- </style>
- <div class="parent">
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- </div>
例子6:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="/1999/xhtml" xml:lang="en">
- <head>
- <title>AgiCRM</title>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="demo" content="Demo" />
- <meta name="demo" content="demo" />
- <style type="text/css">
- div.parent {
- border: 1px solid red;
- width: 600px;
- float: left; /* For round child */
- }
- div.child {
- border: 1px solid green;
- float: left;
- }
- </style>
- <!--[if IE]>
-
- <![endif]-->
- </head>
- <body>
- <div class="parent">
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- </div>
- </body>
- </html>
2.最后一个子TAG后加一clear的无语义tag
- <style type="text/css">
- div.parent {
- border: 1px solid red;
- width: 600px;
- }
- div.child {
- border: 1px solid green;
- float: left;
- }
- div.clear {
- clear: both;
- }
- </style>
- lt;div class="parent">
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- <div class="clear"></div>
- </div>
例子7:
- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- <html xmlns="/1999/xhtml" xml:lang="en">
- <head>
- <title>AgiCRM</title>
- <meta http-equiv="content-type" content="text/html; charset=utf-8" />
- <meta name="demo" content="Demo" />
- <meta name="demo" content="demo" />
- <style type="text/css">
- div.parent {
- border: 1px solid red;
- width: 600px;
- }
- div.child {
- border: 1px solid green;
- float: left;
- }
- div.clear {
- clear: both;
- }
- </style>
- <!--[if IE]>
-
- <![endif]-->
- </head>
- <body>
- <div class="parent">
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- <div class="child">
- child
- </div>
- <div class="clear"></div>
- </div>
- </body>
- </html>
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