几个比较实用的CSS

1、filter:chroma(color:#FFFFFF); 让指定的背景色透明，例:

　　<tbody>

　　　　</tr>

　　　　　　<td>未使用该滤镜</td>

　　　　　　<td>使用该滤镜</td>

　　　　 </tr>

　　</tbody> 　

</table>

2、word-break:break-all; 强制换行

　　<tbody>

<tr>

　　　　　　<td>aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</td>

</tr>

</tbody>

</table>

3、writing-mode:tb-rl; 用于设置文本的书写方向，可以有两个取值：
lr-tb：表示左右-上下，

left right - top bottom tb-rl：表示上下-右左，

top bottom - right left 需要 IE 5.5+ 才支持，

例:

<style>

.clsHoriz { writing-mode: lr-tb }

</style>

　　第一组垂直文字<span class = "clsHoriz">第一组水平文字</span>

　　第二组水平文字<br/><span style = "writing-mode:lr-tb">第二组水平文字</span>

　　第三组竖直文字<span class = "clsHoriz">第三组水平文字</span>

</div>

4、background-color: transparent; transparent表示透明色，例:
<span style = "background-color: #CCCCCC; padding:20px;">

背景透明的TextArea

5、border-collapse:collapse; 它会自动把相同的边框线合并，例:

<style>

.grid { border-collapse: collapse; }

.grid td { border: solid 1px #cccccc; }

.gridNoCollapse td { border: solid 1px #cccccc; }

</style>

不使用border-collapse:collapse;

<tr>

</tr>

<tr>

</tr>

</table>

使用border-collapse:collapse;

<tr>

</tr>

<tr>

</tr>

</table>

6、两个表格并排

<tr>

</tr>

</table>
<table border="1" style="display:inline;">

<tr>

</tr>

</table>

7、overflow: auto; 自适应表格的高，可以自动加滚动条。

8、font:12px/18px; 字体大小/行高，例: <td><p style="font:12px/18px;">这里的12px就表示字体大小，18px其实就等价于css中的line-height。</p></td>

鼠标移上图片发亮

<style type="text/css">    
.opacityit img{  filter:progid:DXImageTransform.Microsoft.Alpha(opacity=40);  -moz-opacity: 0.4;  }    
.opacityit:hover img{  filter:progid:DXImageTransform.Microsoft.Alpha(opacity=100);  -moz-opacity: 1;  }    
</style>    
<a href="http://cnn.com" class="opacityit"><img border="0" src="email.gif" /></a>

鼠标移上有亮边框

用css定义的按钮

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">

<HTML>

<HEAD>

<TITLE> New Document </TITLE>

</HEAD>

<style>

.btn { BORDER-RIGHT: #7b9ebd 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #7b9ebd 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#cecfde); BORDER-LEFT: #7b9ebd 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #7b9ebd 1px solid }

.btn1_mouseout { BORDER-RIGHT: #7EBF4F 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #7EBF4F 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#B3D997); BORDER-LEFT: #7EBF4F 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #7EBF4F 1px solid }

.btn1_mouseover { BORDER-RIGHT: #7EBF4F 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #7EBF4F 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#CAE4B6); BORDER-LEFT: #7EBF4F 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #7EBF4F 1px solid }

.btn2 {padding: 2 4 0 4;font-size:12px;height:23;background-color:#ece9d8;border-width:1;}

.btn3_mouseout { BORDER-RIGHT: #2C59AA 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #2C59AA 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#C3DAF5); BORDER-LEFT: #2C59AA 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #2C59AA 1px solid }

.btn3_mouseover { BORDER-RIGHT: #2C59AA 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #2C59AA 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#D7E7FA); BORDER-LEFT: #2C59AA 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #2C59AA 1px solid }

.btn3_mousedown { BORDER-RIGHT: #FFE400 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #FFE400 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#C3DAF5); BORDER-LEFT: #FFE400 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #FFE400 1px solid }

.btn3_mouseup { BORDER-RIGHT: #2C59AA 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #2C59AA 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#C3DAF5); BORDER-LEFT: #2C59AA 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #2C59AA 1px solid }

.btn_2k3 { BORDER-RIGHT: #002D96 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: #002D96 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 12px; FILTER: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#FFFFFF, EndColorStr=#9DBCEA); BORDER-LEFT: #002D96 1px solid; CURSOR: hand; COLOR: black; PADDING-TOP: 2px; BORDER-BOTTOM: #002D96 1px solid }

</style>

<body>

<button class="btn" title="好看的按钮">好看的按钮</button>

<P></p>

<button
class=btn1_mouseout onmouseover="this.className='btn1_mouseover'" onmouseout="this.className='btn1_mouseout'" title="好看的按钮">好看的按钮</button>  

<button class="btn1_mouseout" onmouseover="this.className='btn1_mouseover'" onmouseout="this.className='btn1_mouseout'" DISABLED>好看的按钮</button>

<P>

<button class="btn2" title="好看的按钮">好看的按钮</button>

<P>

<button class="btn3_mouseout" onmouseover="this.className='btn3_mouseover'" onmouseout="this.className='btn3_mouseout'" onmousedown="this.className='btn3_mousedown'" onmouseup="this.className='btn3_mouseup'" title="好看的按钮">好看的按钮</button>

<P>

<button class="btn_2k3" title="好看的按钮">好看的按钮</button>

</BODY>

</HTML>

用css定义的页面效果（上，左右，下）

<html>

<head>

body{ text-align:center; background:#999 }

#header{ width:776px; padding:0px; background:#eee; height:60px; text-align:left;}

#contain{ margin-right:auto; margin-left:auto; width:776px}

#right{ float:right; margin:2px 0px 2px 0px; padding:0px; width:574px;
background:#ccd2d3; text-align:left;}

#left{ float:left; margin:2px 2px 0px 0px; padding:0px; background:#f2f3f7; width:200px; text-align:left;}

#footer{ width:776px; margin-right:auto; margin-left:auto; padding:0px; background:#eee; height:60px;}

</style> </head> <body> <div id="header">header</div> <div id="contain">

right

</div>

</div>

</div>

</body>

</html>

input的样式

INPUT.button { BORDER-RIGHT: #909090 3px double; PADDING-RIGHT: 0.25em; BORDER-TOP: #c0c0c0 3px double; PADDING-LEFT: 0.25em; BACKGROUND: url(../fade-butt[2].png); PADDING-BOTTOM: 0.05em; BORDER-LEFT: #c0c0c0 3px double; COLOR: #333; PADDING-TOP: 0.05em; BORDER-BOTTOM: #909090 3px double }

INPUT.text { BORDER-RIGHT: #909090 3px double; PADDING-RIGHT: 0.25em; BORDER-TOP: #909090 3px double; PADDING-LEFT: 0.25em; BACKGROUND: url(../bg_diag[1].png) repeat-x 50% bottom; PADDING-BOTTOM: 0.2em; BORDER-LEFT: #909090 3px double; WIDTH: 200px; PADDING-TOP: 0.15em; BORDER-BOTTOM: #909090 3px double }

TEXTAREA.text { BORDER-RIGHT: #909090 3px double; PADDING-RIGHT: 0.25em; BORDER-TOP: #909090 3px double; PADDING-LEFT: 0.25em; BACKGROUND: url(../bg_diag[1].png) repeat-x 50% bottom; PADDING-BOTTOM: 0.2em; BORDER-LEFT: #909090 3px double; WIDTH: 520px; PADDING-TOP: 0.15em; BORDER-BOTTOM: #909090 3px double; HEIGHT: 120px }

细线表格

table{border:1px solid #000;border-width:1px 0 0 1px;margin:2px 0 2px 0;text-align:center;border-collapse:collapse;}

td,th{height:20px; border:1px solid #000;border-width:0 1px 1px 0;margin:2px 0 2px 0;text-align:left;}

th{text-align:center;font-weight:600;font-size:12px;background-color:#F4F4F4;}