*{
    margin: 0;
    padding: 0;
    list-style: none;
}
body{
    font-family: Microsoft Yahei, Helvetica, sans-serif;
    color: #2B2B2B;
    font-size: 18px;
    width: 100%;
}
ul,p,h1,h2,h3,h4,h5,h6,input,ol{
    margin:0;
    padding:0;
}
body ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
body a {
    text-decoration: none;
}
body a:hover{
    color:#3e3e3d;
}
.left{
    float:left;
}
input{
    border: none;
}
.right{
    float:right;
}
.center{
    margin: 0 auto;
}
#main_content,#box,#header,#section,#footer{
    margin:0 auto;
    overflow:hidden;
}
#main_content,#box,#header,#section,#footer:after{
    content: '';
    display:block;
    clear:both;
}
.clear:after{
    content: '';
    display: block;
    clear: both;
}