html,
body {
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  background: #00020a;
  background: linear-gradient(0deg, rgba(0, 2, 10, 1) 0%, rgba(5, 57, 125, 1) 51%, rgba(0, 72, 148, 1) 100%);
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}