*{margin: 0 auto;padding: 0;font-family: "微软雅黑";}
ul{list-style-type: none;}
a{text-decoration: none; cursor: pointer;}
img{border: 0;}
body{
    background: #fff;
}
i,em{
    font-style: normal;
}
body *,body{
    box-sizing: border-box;
}
.w1200{
    width: 1200px;
    margin:0 auto;
}