body {
  background-image: url('../images/bg-login/bg1.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
}
body.bg-image-1 {
  background-image: url('../images/bg-login/bg1.jpg');
}
body.bg-image-2 {
  background-image: url('../images/bg-login/bg2.jpg');
}
body.bg-image-3 {
  background-image: url('../images/bg-login/bg3.jpg');
}
body.bg-image-4 {
  background-image: url('../images/bg-login/bg4.jpg');
}
body.bg-image-5 {
  background-image: url('../images/bg-login/bg5.jpg');
}