#tree{background:url(img/tree.png) no-repeat; width:1007px; height:1321px; position: absolute; left:0px; bottom:-1330px; z-index:1;}
#weed_1{background:url(img/nature/weed_1.png) no-repeat; width:401px; height:89px; position: absolute; left:2000px; bottom:0px; z-index:10;}
#weed_2{background:url(img/nature/weed_2.png) no-repeat; width:534px; height:157px; position: absolute; left:2700px; bottom:0px; z-index:10;}
#weed_3{background:url(img/nature/weed_3.png) no-repeat; width:471px; height:103px; position: absolute; left:1000px; bottom:0px; z-index:10;}