.login {
  margin: 0 auto;
  width: 460px;
  position: relative;
  padding: 20px 40px;
}
@media screen and (max-width: 640px) {
  .login {
    width: 420px;
    padding: 20px 20px;
  }
}
@media screen and (max-width: 480px) {
  .login {
    width: 100%;
    margin: 0 auto;
    padding: 20px 0;
  }
}
.login header {
  text-align: center;
  margin-bottom: 20px;
}
.login header img {
  width: 130px;
}
.login form {
  display: block;
}
.login form input,
.login form a,
.login form button {
  width: 100%;
  margin-bottom: 10px;
}
.login form .group {
  margin-bottom: 24px;
}
.login form .btn {
  font-weight: 500;
  margin-bottom: 12px;
}
.login form .forgot {
  padding-bottom: 12px;
  margin: 0 0 24px;
  border-bottom: 1px solid #ccc;
}
.login form .refer {
  text-align: center;
  margin-bottom: 0;
}