.sticky-player {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: #222;
  color: #fff;
  padding: 8px;
  z-index: 9999;
  text-align: center;
  border-top: 2px solid #444;
}

.sticky-player audio {
  width: 90%;
}