body,html{
    width: 100%;
    height: 100%; 
}

#body{
    width: 100%;
    height: 100%;
    background: url(../img/home.jpg);
    background-size: cover;
}
.center{
    background: url(../img/index/center.png);
    background-size: cover;
    position: absolute;
    top: 40%;
    width: 39%;
    height: 28%;
}
.return{
    position: absolute;
    top: 70%;
    left: 1%;
}
.return span{
    /*margin-top: 10px;*/
}
.return div{
    display: inline-block;
}
/*.xjpPeace{
    width: 10.2%;
}
.ltNow{
    width: 7.2%;
}
.themeConference{
    width: 16%;
}
.city{
    width: 20%;
}
.worldAction{
    width: 11.5%;
}
.paceZI{
    width: 14%;
}*/
.item02{
 display: block;
}
.item03{
    display: block;
}
html, body {height:100%;overflow:auto;margin: 0;}