#bg{ position:fixed; top:0; left:0; bottom:0; right:0; z-index:-1; }
#bg img { width:100%; height:100%; } 

#center { position:absolute; width:1000px; height:300px; top:40%; left:50%; margin:-150px 0 0 -500px; }
#center #login_msg { position:absolute; top:0px; left:0px; width:571px; height:94px; background:url(images/login/login_msg.png) no-repeat; }
#center #login_bg { position:absolute; top:0px; right:100px; width:301px; height:293px; background:url(images/login/login_form.png) no-repeat; }
#center #login_bg ul { margin:114px 0 0 15px; width:271px; }
#center #login_bg ul li { margin:0 0 20px 0; height:40px; }
#center #login_bg ul li img.icon { float:left; width:20px; height:20px; margin:8px 0 0 15px;}
#center #login_bg ul li input { float:left; width:160px; height:38px; line-height:38px; padding:0 5px; background-color:Transparent; border:none; font-size:14px; color:#fff; outline:none; }
#center #login_bg ul li a.login { position:absolute; top:173px; right:18px; width:61px; height:41px; background:url(images/login/login_btn.png) no-repeat; }
#center #login_bg ul li.btm { margin:30px 0 0 0; }
#center #login_bg ul li.btm a { display:block; float:left; height:24px; line-height:24px; font-family:"Microsoft YaHei",Arial,Helvetica,sans-serif,"宋体"; font-size:13px; color:#fff; }
#center #login_bg ul li.btm a.cb01 { margin:8px 0 0 8px; padding:0 0 0 26px; background:url(images/login/cb01.png) 0px 0px no-repeat; }
#center #login_bg ul li.btm a.cb02 { margin:8px 0 0 8px; padding:0 0 0 26px; background:url(images/login/cb02.png) 0px 0px no-repeat; }
#center #login_bg ul li.btm a.pwd { margin:8px 0 0 12px; padding:0 0 0 22px; background:url(images/login/icon_forget.png) 0px 2px no-repeat; }