#demoLeft {float:left;margin:150px 0 0 50px;background: #FFF;overflow:hidden;border: 0px dashed #CCC;width: 500px;height:150px;border:5px solid #ccc;}

#demoTop {float:left;overflow:hidden;height: 103px;width: 378px;}


#demoLeft .indemo {float: left;width: 500%;}

#demoTop .indemo {float: left;width: 100%;}

#demo1,#demo3 {float: left;
}
#demo2,#demo4 {float: left;}
#demo3,#demo4{width:348px;margin-left:15px;}

#demo1 img,#demo2 img,#demo3 img,#demo4 img{}