css通用全局样式~a链接、列表项、浮动各种样式

@CHARSET "UTF-8";
/*全局样式*/
body,h1,h2,h3,h4,h5,h6,p ,div,input,select,table,ul,ol,li,tr,td,th,dl,dt,dd,form,textarea{
padding:0;
margin:0;
}
/* 设置字体*/
body{
font-size:12px;
font-family:宋体,arial;
}
a{
color:#333;
text-decoration:none;
}
a:hover{
color:#900;
text-decoration:underline;
}
img{
border:0px;
}
h1,h2,h3,h4,h5,h6{
font-size:14px;
font-weight:bold;
}
.clear{
overflow:hidden
}
/* .clear{
clear:both;
zoom:1;
}
.clear:after{
display:block;
content:'.';
height:0;
clear:both;
visibility:hidden;
} */
/* 公共样式 */
.area{
margin:0 auto;
width:1200px;
}
.float-left{
float:left;
}
.float-right{
float:right;
}

.margin-top-10{
margin-top:10px;
}
.margin-top-20{
margin-top:20px;
}
/* 清除浮动:清除高度影响（父级元素设置） */
.clear{
overflow:hidden;
}
ul,li,ol{
list-style:none;
}