#download { width: 1280px; height: 121px; position: absolute; top: 688px; left: 50%; margin-left: -400px; z-index: 1500; }
#downloada { float: left; width: 1280px; height: 121px; overflow: hidden; margin-right: 20px; margin-top: 10px; }
#downloada .btn_downa { float: left; width: 340px; height: 121px; position: relative; text-indent: -9999em; background: url("../images/btn-1.png")/*tpa=http://www.xhw180.com:888/images/btn-1.png*/ left bottom no-repeat; display: block; }
#downloada .btn_downa:hover { text-decoration: none; background: url("../images/btn-1_hover.png")/*tpa=http://www.xhw180.com:888/images/btn-1_hover.png*/ left top no-repeat; }
#downloada .btn_downb { float: left; width: 340px; height: 121px; position: relative; text-indent: -9999em; background: url("../images/btn-2.png")/*tpa=http://www.xhw180.com:888/images/btn-2.png*/ left bottom no-repeat; display: block; margin-left: 60px; }
#downloada .btn_downb:hover { text-decoration: none; background: url("../images/btn-2_hover.png")/*tpa=http://www.xhw180.com:888/images/btn-2_hover.png*/ left top no-repeat; }
#downloada .btn_downc { float: left; width: 340px; height: 121px; position: relative; text-indent: -9999em; background: url("../images/btn-3.png")/*tpa=http://www.xhw180.com:888/images/btn-3.png*/ left bottom no-repeat; display: block; margin-left: 60px; }
#downloada .btn_downc:hover { text-decoration: none; background: url("../images/btn-3_hover.png")/*tpa=http://www.xhw180.com:888/images/btn-3_hover.png*/ left top no-repeat; }