body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  overflow: hidden;
  font-family: sans-serif;
}

#background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

#overlay {
  position: absolute;
  top: 20px;
  right: 20px;
  color: white;
  text-align: right;
}

#clock {
  font-size: 48px;
  font-weight: bold;
}

#date {
  font-size: 18px;
}

#weather {
  font-size: 14px;
}