html,
body {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  background: rgb(255, 251, 0);
  background: linear-gradient(0deg, rgb(255, 251, 0) 0%, rgb(245, 245, 16) 47%, rgb(234, 238, 0) 100%);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}