body,h1,h2,h3,h4,h5,h6,hr,p,blockquote,dl,dt,dd,ul,ol,li,pre,form,fieldset,legend,button,th,td,img {border:medium none;margin:0;padding:0;}
body {background:#eef7ff;}
.nav-box ul{ margin:90px auto;text-align:center;}
.nav-box li{display:inline-block; margin:0 30px; text-align:center;}
.nav-box li a{width:296px; height:234px; display:block;color:#fff; font-size:28px; font-weight:bold; background:url("btn_an1.png") no-repeat center center; text-decoration:none; text-align:center;}
.nav-box li a:hover{background:url("btn_an2.png") no-repeat center center;}
.nav-box li a i{width:131px; height:131px; display:block;margin:0 auto; padding:24px 0;}
.nav-box li a i.icon1{ background:url("btn_icon1.png") no-repeat center center; }
.nav-box li a i.icon2{background:url("btn_icon2.png") no-repeat center center;}