html,body,h1,h2,h3,h4,h5,h6,div,dl,dt,dd,ul,ol,li,p,blockquote,pre,hr,figure, caption,th, form,fieldset,legend,input,button,textarea,menu{margin:0;padding:0;}
header,footer,section,article,aside,nav,hgroup,address,figure,figcaption,menu,details{display:block;}
caption,th{text-align:left;font-weight:normal;}
html,body,fieldset,img,iframe,abbr{border:0;}
i,cite,em,var,address,dfn{font-style:normal;}
[hidefocus],summary{outline:0;}
li{list-style:none;}
h1,h2,h3,h4,h5,h6,small{font-size:100%;}
sup,sub{font-size:83%;}
pre,code,kbd,samp{font-family:inherit;}
q:before,q:after{content:none;}
textarea{overflow:auto;resize:none;}
label,summary{cursor:default;}
h1,h2,h3,h4,h5,h6,em,strong,b{font-weight:bold;}
a{text-decoration:none}

body{
    background: #f3f3f3;
    font-family: 微软雅黑;
    font-size: 14px;
}

.clear:after{
    clear:both;
    width: 0;
    height: 0;
    content:'.';
    display: block;
    visibility:hidden;
}
.float_left{
    float: left;
}
.float_right{
    float: right;
}
html{
    background: #efefef;
}
body{
    background: url("../images/banner.jpg") no-repeat center top;
    background-size: 100% auto;
    background-attachment:fixed;
}


/***建党100年

body{
    background: url(http://www.dymum.com/images/20da_bm.png) no-repeat top center;padding-top:150px; !important;

}**/