html{
  height: 100%;
  background: url('../images/bgc.jpg') no-repeat;
}
body {
  height: 100%;
  text-align: center;
  margin: 0 auto;
}
input {
  border: 1px solid #4a799c;
  outline:medium;
  width: 220px;
  height: 20px;
}
.input {
  display: inline-block;
  margin-top: 200px;
  height: 320px;
  width: 535px;
  background: url('../images/input.png') no-repeat;
  background-size: 100%;
}
.input span {
  color: #4a799c;
}
.username {
  margin: 150px 0 16px 0;
}
.password {
  margin-bottom: 26px;
}
.btnLogin,
.btnQuit{
  display: inline-block;
  width: 94px;
  height: 41px;
}
.btnLogin {
  background: url('../images/btn_login.png');
}
.btnQuit {
  background: url('../images/btn_quit.png');
}