blockquote, body, button, dd, dl, dt, fieldset, form, h1, h2, h3, h4, h5, h6, hr, input, legend, li, ol, p, pre, td, textarea, th, ul {
    margin: 0;
    padding: 0;
}
ul,ol,dl{list-style: none;}
a{text-decoration: none;color: black;}
img{border: none;vertical-align: bottom;}
.clearfix:after{content: "";display: block;clear: both;}
.clearfix{zoom:1;}
input{outline: none;}
body{
    background-color: #f5f5f5;
    background-size: 100%;
    font-family: "微软雅黑";
}
.beijing{
	background: url("../img/beijing.jpg")  no-repeat fixed; 
	background-size: 100%;
}