*{padding:0;margin:0;box-sizing:border-box;}

body {
  background-color:#000;
	margin: 0;
  padding: 0;
  height: 100vh;
	width:100%;
  position: relative;
}

.logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.logo img {
  max-width: 100%;
  max-height: 100%;
  height: 42vh;
	width: auto;
}

.background-container {
  position: relative;
  width: 100%;
  height: 100%;
}

.gradient-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(-45deg, #2d2d2d, #000000, #cccccc);
  background-size: 400% 400%;
  animation: gradientAnimation 21s ease infinite;
}
@keyframes gradientAnimation {
  0% {
    background-position: 0 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0 50%;
  }
}