html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
  height: 100%;
  width: 100%;
}

.fullscreen {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
}

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