styles.sass

body, html
  margin: 0
  padding: 0
  font-size: 50px

  .container
    position: absolute
    width: 100%
    height: 100%
    display: flex
    justify-content: center
    flex-direction: column
    text-align: center
    color: white
    font-family: 'Helvetica', helvetica, arial
    text-shadow: 0 0 12px black

  .Gif
    position: absolute
    top: 0
    right: 0
    bottom: 0
    left: 0
    overflow: hidden
    z-index: -100
    display: flex

    video
      min-width: 100%
      min-height: 100%
      object-fit: cover