body.login {
  background-color: #f4f4f4;
}
body.login #login h1 a {
  /*background-image: url("https://your-site.com/wp-content/uploads/meonlink-logo.png");*/
  background-size: contain;
  width: 100%;
  height: 80px;
}
body.login #loginform {
  background: #ffffff;
  border: 1px solid #ddd;
  padding: 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}