.bg-container{
background-image:  url('https://4verii.neocities.org/4verii2.gif');
height: 100vh;
width:100vh;
background-position: center;
background-repeat: no-repeat;
padding:0;
margin:0;
}

body {
  background-color: #fff;
  font-family: -apple-system, system-ui, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: .8rem;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  animation: BackgroundColor 16s infinite;
}
 @keyframes BackgroundColor {
   0% {
     background-color: #fff;
   }
   31.25% {
 background-color:#fff;
  }
  44% {
 background-color:#000;
  }
  81.25% {
 background-color:#000;
  }
  93.75% {
 background-color:#fff;
  }
  100% {
     background-color:#fff
  }
 }