/* Remove this if you dont want background overlay over the image or adjust per your needs */

body.login_admin {
  background: url('https://www.balliante.com/portal/files/system/system_file65953ccfcb592-PortalBackground.png') no-repeat center center fixed; /* The full image url*/
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}

body.customers_login {
  background: url('https://www.balliante.com/portal/files/system/system_file65953ccfcb592-PortalBackground.png') no-repeat center center fixed; /* The full image url*/
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}