.tower{
height:210;
width:60;
}
.bottom{
height:82;
width:60;
margin-top:140;
position:absolute;
}
.top{
height:70;
width:60;
}
.topbottom{

}
.sitem div{
border: solid 1px;#000000;

}
.sitem{
width:50px;
height:50px;
background:#ffffff;
padding:10px;
float:left;
margin:5px;
cursor: pointer;
}