.ones {
    background: url(../../images/home/27.jpg) no-repeat fixed;
    /*background: url("../../images/home/27.jpg");*/
}
.twos {
    background: url(../../images/home/img/2.jpg)no-repeat fixed;
}
.threes {
    background: url(../../images/home/img/3.jpg)no-repeat fixed;
}

.fours {
    background: url(../../images/home/img/4.jpg)no-repeat fixed;
}
.ones,
.twos,
.threes,
.fours {
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    -ms-background-size: cover;
    min-height: 795px;
}
.container{
    margin: 0;
    width: 100%;
    /*height: 100%;*/
    position: relative;
}

.esed{
    width: 500px;
    /*position: absolute; !* 这里我们将box元素设置为绝对定位 *!*/
    /*top: -200px;*/
    /*left: 500px;*/
}