body{
    /* padding:0;*/
    margin:0 auto;
    /*border:0;*/
    font-family: 微软雅黑;
    font-size:16px;
    color:#333300;
    font-weight: bold;

}
body, header,dl, dt, dd, ul, ol, li, pre, code, form, fieldset, legend, input, button, textarea, p, blockquote, h1{padding:0;margin:0;}
*{margin: 0;padding: 0;box-sizing:border-box;-moz-box-sizing:border-box; /* Firefox */-webkit-box-sizing:border-box; /* Safari */}

/*公共部分*/
ul ,ol{
    list-style: none;
}
li{
    list-style:none;
}
.clear{
    clear:both;
    height:0;
}
.background_bg{  background:url(jsj_04.png) ;   background-position:center; background-repeat:no-repeat;  height:4714px; margin: 0 auto;}

.sect_bg {
    width: 729px;
    height:auto;
    margin: 0 auto;

padding-top:1120px;

}
/*公共部分*/
.tu_01{ margin-top:65px;}
.tu_01 img{
    float:left; margin-left:155px; margin-top:40px;
}