@import url('https://fonts.googleapis.com/css2?family=Caveat:wght@600&display=swap');

html {
  background: url(bg.gif) center center/cover no-repeat fixed, 0 0/cover #000;
  height: 100%;
  color: #fff;
}

#logo {
  position: absolute;
  bottom: 10px;
  left: 10px;
  font-family: 'Caveat', cursive;
  font-weight: 600;
  font-size: 2.5em;
  padding: .3em .5em;
  text-shadow: 0 2px 8px rgba(0, 0, 0, .6);
}

@media only screen and (min-width: 640px) {
  #logo {
    font-size: 5.6em;
    padding: .4em 1em;
  }
}