body, html {
  background: #000000;
  height: 100%;
}

.bg {
  /* The image used */
  background-image: url("/main/images/HA_main_screen.png");

  /* Full height */
  height: 100%;

  /* Center and scale the image nicely */
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}
/*
.flash {
    background-image: url("/main/images/flash.png");
    animation-duration: 3s;
    animation-name: flash;
}

@keyframes flash {

    0% {
        opacity: 0;
    }

    50% {
        opacity: 1;
    }
}
*/