* {
    box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
}
    
        
body {
  display: flex;
  flex-direction: column;
  background-color: black;
}





/*body {
          background-color: black;
          background: linear-gradient(90deg, #000000, #3f3f3f);
          background-size: 400% 400%;
          animation: GradientBackground 20s ease infinite;
        }

        @keyframes GradientBackground {
          0% {
            background-position: 0% 50%;
          }

          50% {
            background-position: 100% 50%;
          }

          100% {
            background-position: 0% 50%;
          }
        };*/