cssreset

<style type="text/css">

body, ul, li, h1, h2, h3, h4, h5, h6, p, form, dl, dt, dd { margin: 0px; padding: 0px; font-size: 12px; font-weight: normal; } 
ul { list-style: none; } 
img { border-style: none; } 


/*清除浮动，给浮动的父亲加样式*/
.cf {zoom:1}
.cf:after {clear:both;content:".";display:block;visibility:hidden;height:0}
/*在FF下显示滚动条*/
html{ overflow:-moz-scrollbars-vertical}

/*最小宽度为200，除IE6外最大宽度为auto（IE6不支持!important属性）*/
height:auto!important
min-height:200px
</style>