表单对齐效果

效果图

见附件

css

<style type="text/css">
*{
margin:0;
padding:0;
}
body{
font-size:63%;
color:#000;
}
/*input*/
.input_on{
padding:2px 8px 0pt 3px;
height:18px;
border:1px solid #999;
background-color:#FFFFCC;
}
.input_off{
padding:2px 8px 0pt 3px;
height:18px;
border:1px solid #CCC;
background-color:#FFF;
}
.input_move{
padding:2px 8px 0pt 3px;
height:18px;
border:1px solid #999;
background-color:#FFFFCC;
}
.input_out{
/*height:16px;默认高度*/
padding:2px 8px 0pt 3px;
height:18px;
border:1px solid #CCC;
background-color:#FFF;
}
/*form*/
ul.input_test{
margin:20px auto 0 auto;
width:500px;
list-style-type:none;
}
ul.input_test li{
width:500px;
height:22px;
margin-bottom:10px;
}
.input_test label{
float:left;
padding-right:10px;
width:100px;
line-height:22px;
text-align:right;
font-size:1.4em;
}
.input_test p{
float:left;
_margin-top:-1px;
}
.input_test span{
float:left;
padding-left:10px;
line-height:22px;
text-align:left;
font-size:1.2em;
color:#999;
}
</style>

 html

<ul class="input_test">
<li>
<label for="inp_name">姓名：</label>
<p><input id="inp_name" class="input_out" name="" type="text" onfocus="this.className='input_on';this.onmouseout=''" onblur="this.className='input_off';this.onmouseout=function(){this.className='input_out'};" onmousemove="this.className='input_move'" onmouseout="this.className='input_out'" /></p>
<span>请输入您的姓名</span>
</li>
<li>
<label for="inp_email">Email：</label>
<p><input id="inp_email" class="input_out" name="" type="text" onfocus="this.className='input_on';this.onmouseout=''" onblur="this.className='input_off';this.onmouseout=function(){this.className='input_out'};" onmousemove="this.className='input_move'" onmouseout="this.className='input_out'" /></p>
<span>请输入您的Email</span>
</li>
<li>
<label for="inp_web">网站：</label>
<p><input id="inp_web" class="input_out" name="" type="text" onfocus="this.className='input_on';this.onmouseout=''" onblur="this.className='input_off';this.onmouseout=function(){this.className='input_out'};" onmousemove="this.className='input_move'" onmouseout="this.className='input_out'" /></p>
<span>请输入您的网站</span>
</li>
</ul>