#floor_chose {
    width: 100%;
    height: 100%;
    position: absolute;
    z-index: 9999;
}
#floor_chose div:first-child{
    margin-top: 16%;
}
#floor_chose div{
    width: 100%;
    /*height: 15%;*/
    /*border: 1px solid black;*/
    text-align: center;
    vertical-align: middle;
}
#floor_chose img {
    width: 100%;
    /*height: 100%;*/

}