@charset "utf-8";.main { width:100%; height:413px; border-bottom:5px solid #a4cdf4; background:#f3f9ff}.main .bg1 { background:url(bg_1.jpg) center top; height:144px;}.main .bg2 { background:url(bg_2.jpg) center top; height:131px;}.main .bg3 { background:url(bg_3.jpg) center top; height:138px;}.content { width:560px; height:130px; margin:0 auto; padding:15px 0 10px 30px}.content p { line-height:1.8; padding-bottom:10px}.content a { width:197px; height:48px; background:url(download.png) no-repeat; border:0; cursor:pointer; margin:0 auto; display:block}.foot { width:100%}.top { height:72px; overflow:hidden}