html {
  font-size: 16px;
}

body {
  background-color: rgba(0, 0, 0, 0.4);
  padding: 1rem;
}

#player {
  box-shadow: 0 0 2px 3px rgba(255, 255, 255, 0.3);
  padding: 0.5rem;
}

#settings sup {
  top: -1rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: bold;
}

.alert {
  position: fixed;
  margin: 0.5rem;
}

@media (max-width: 992px) {
  #settings {
    margin-bottom: 1rem;
  }
}

@media (min-width: 992px) {
  body {
    margin-top: 3rem;
  }

  #settings {
    position: absolute;
    top: 1rem;
  }
}