html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  margin: 0;
  font-family: 'microsoft yahei';
  background-image: url(../images/login_bg.jpg);
}

html {
  _height: auto;
  _padding: 50px 0 0px;
}

.login {
  width: 640px;
  height: 400px;
  position: absolute;
  left: 50%;
  top: 50%;
  margin-left: -320px;
  margin-top: -200px;
}

.logo {
  background-image: url(../images/admin_logo.png);
  background-repeat: no-repeat;
  background-position: 30px center;
  height: 150px;
}

.login_form {
  height: 80px;
  margin-left: auto;
  margin-right: auto;
  width: 600px;
}

.login_form .user {
  background-image: url(../images/login_name_bg.jpg);
  width: 540px;
  height: 80px;
  float: left;
}

.login_form .button {
  background: url(../images/login_button.jpg);
  width: 50px;
  background-repeat: no-repeat;
  background-position: left center;
  height: 54px;
  float: left;
  display: block;
  text-indent: -9999px;
  border: none;
  margin-top: 10px;
  position: relative;
}

.login_form .text_value {
  float: left;
  margin-left: 17px;
  padding-left: 10px;
  padding-right: 10px;
  margin-top: 15px;
  width: 225px;
  height: 50px;
  line-height: 50px;
  font-size: 16px;
  color: #666;
  font-weight: bold;
  border: none;
  background-color: #f5f6f7;
}

.foot {
  padding-top: 30px;
  text-align: center;
  color: #fff;
  padding-right: 80px;
}

#tip {
  padding-top: 10px;
  color: #fff;
  background-image: none;
  text-align: center;
  padding-right: 80px;
  font-size: 14px;
}