*{
margin:0;
padding:0;
}
a
{
text-decoration: none;
}
a:hover
{
text-decoration: underline;
}

div 
{
float:left;
overflow:hidden;
}
body
{
font-family: "微软雅黑";
color:#000000;
background:#f1f1f1;
margin:0px auto;
float:none;
width:100%;
}