#body{/*background: no-repeat 80% 13%*/}

#content1{/*padding-top:18px;width:1000px;margin:0 auto;height: 327px;
box-sizing: border-box;background:  no-repeat 102% 43%;*/}
body{background:/* repeat-x left 340px*/ #fff;}
#rightbg{/*background: no-repeat right bottom;*/height:320px}
/*#rightbg{background: no-repeat right top;height:320px}*/
.nav ul li:nth-child(1) a{    color: #0da3e2;
    font-weight: bold}


/*内容3*/
#content3{width:1150px;margin:50px auto 0;padding-bottom:50px;overflow:hidden}