CSS背景图片设置

*{
    margin:0px;
    padding:0px;
    list-style: none;
    text-decoration: none;
    font-family: Arial,'Microsoft YaHei',"Helvetica Neue",Helvetica,sans-serif;
}
body{
  background-color: #e5e5e5;
  background: url(../images/tyczz2.jpg);
  background-position: center top;
  background-size: 100%;
  background-repeat: no-repeat;
  background-attachment: fixed;
  

}
.main{
    background-color: #ffffff;
    width:1220px;
    margin:0 auto;
    height:1480px;
}
.head{
    width:100%;
    height:40px;
    background-color:#000;
}
.nav{
    
    position:relative;
    z-index:3;
}
.nav ul{
    width:1305px;
    height:40px;
    margin:0px auto;
}
.nav ul li{
    font-size:16px;
    color:#fff;
    width:115px;
    height:40px;
    float:left;
    text-align:center;
    margin-left:30px;    
}
.nav ul li dl a{
    color:#fff;
}
.nav ul li dl dt{
    margin:0px;
    padding:0px;
    width:115px;
    height:40px;
    line-height:40px;
    position: relative;    
}
.nav ul li dl dt:hover{
    background-color:#173E7B;    
}
.nav ul li dl dd{
    font-size:14px;
    color:black;
    width:115px;
    height:30px;
    background-color:#000;
    border-top:1px solid #fff;
    line-height: 30px;
    display:none;
    border-radius:5px;

}
.nav ul li:hover dl dd{
    display:block;
    position:relative;

}
.nav ul li dl dd .hot{
    color:red;

}
.nav ul li dl dd a:hover{
    color: #ffd053;
}
.nav ul li dl dd .hot:hover{
    color:#44EAAD;
}
.nav ul li dl dt img{
    position:absolute;
    bottom:25px;
}
.nav ul li dl dd .hot-img {
    position:absolute;
    bottom:20px;
    
}
.creat{
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 2px;
    vertical-align: middle;
    border-top: 4px dashed;
    border-right: 4px solid transparent;
    border-left: 4px solid transparent;
}
.nav ul li dl dd p{
    width:60px;
    height:30px;
    line-height:30px;
}
.ad1{
    width:100%;
    margin:0px auto;
    margin-left:10px;
}
.ad{
    width:100%;
    height:110px;
    margin:5px auto;
    margin-left:10px;
}

/***********************************************************************/
.container{
    width:1200px;
    height:568px;
    margin-left:10px;
}
.promo{
    width:800px;
    height:458px;
    float:left;
}
.rec{
    width:350px;
    height:458px;
    float:left;
}
.pic{
    width:115px;
    height: 70px;
    float:left;
    margin-right:15px;
    
}
.promo ul li{
    width:100%;
    height:70px;
    margin-top:15px;
}
.promo ul li p{
    position: relative;
}

.promo ul li p a{
    color:#f60;
    position:absolute;
    right:0px;
    top:0px;
}
.promo ul li p a:hover{
    text-decoration: underline;
}
.promo ul li h3 a{
    display:block;
    color: #333;
    font-size: 18px;
    margin-bottom:8px;
}
.promo ul li h3 a:hover{
    text-decoration: underline;
    color: #FF6600;
}
.promo ul li p {
    font-size: 12px;
    height: 40px;
    line-height: 20px;
    overflow: hidden;
    color: #666565;
    position: relative;
}
.rec{
    margin-left: 50px;
}
/***********************************************************************/
.rec-type{
    width: 350px;
    height: 165px;
    

}
.rec-1{
    width:350px;
    height:45px;
    border-left:3px solid #00aa98;
    padding-left:7px;
    margin-top:15px;
}
.rec-1 h3{
    font-size: 16px;
    height:27px
    line-height:22px;
    color:#000;
    padding: 0 12px 0 5px;
    float:left;
}
.rec-1 span{
    display:block;
    color:#787878;
    height:27px;
    line-height:24px;
    font-size: 12px;

}
.rec-4{
    padding:0 8px;
    font-size: 14px;
    height:18px;
    line-height:20px;
}
.rec a{
    color:#333;
}
.rec a:hover{
    text-decoration: underline;
}
.promo h2{
    border-bottom: 3px solid #00aa98;
    display:inline-block;
    height: 30px;
    padding-left: 28px;
    background: url(../images/ico_i_sys.png) 0 0 no-repeat;
}
.rec h2{
    border-bottom: 3px solid #00aa98;
    display:inline-block;
    height: 30px;
    padding-left: 28px;
    background: url(../images/ico_i_sys.png) 0 -30px no-repeat;
     margin-bottom:10px;
}


/**************************************************************************/
.footer1 {
    height: 190px;
    background-color:#061a31;
    margin:20px 0px 0px 0px;
    padding: 0px;
    width: 1200px;
    
    text-align: center;
    display: block;
    margin-left:10px;

    
}
.footer-ad {
    padding: 0px;
    margin: 0px;
    width: 24.83%;
    height: 70px;
    background-color:#071f3c;
    border: 1px solid #D5B362;
    float: left;
    display: block;
}
.footer-ad p {
    margin-top: 4px;
    color: #fff;
    font-size: 18px;

}
.footer-ad-bottom{
    position:relative;
}
.footer1 i {
    display: block;
    width: 900px;
    height: 4px;
    background-color: #fff;
    overflow: hidden;
    position:relative;
    left: 140px;
    top:55px;
    clear: both;
    z-index: 1;
}
.footer-ul {
    height: 100%;
    margin: 0px;
    padding: 0px;
    display: flex;

}
.footer-ul li {
    margin-top: 10px;
    padding: 0px;
    z-index: 2;
    margin: 0px auto; 
    padding: 0px;
    display: inline-block;
}
.footer-bootom-radius {
    width: 100px;
    height: 100px;
    border-radius: 50px;
    float: left;
    background-color: #fff;
    padding: 0px;
    margin-top: 5px;
}
.footer-bootom-radius span {
    display: block;
    font-size: 30px;
    line-height: 36px;
    margin-top: 22px;
}
/****************************************************************************/
.footer{
    width:100%;
    background-color: #020c18;
    text-align: center;
    padding-bottom: 20px;
}
.w1000{
    width: 1000px;
    margin:0px auto;
}
.ico{
    height: 47px;
    background:url(../images/ico.png) no-repeat;
}
.footer .flink {
    text-align: center;
    color: #434343;
    height: 50px;
    line-height: 50px;
}
.footer .flink a {
    font-size: 12px;
    font-family: "微软雅黑";
    color: #fff;
    margin: 0 10px;
    transition: all 0.3s;
}
.footer .flink a:hover{
    color: #ffcf2e;
}
.footer .copyright {
    text-align: center;
    color: #fff;
    font-size: 12px;
    font-family: "微软雅黑";

}