.music-toggle{
  position:fixed;
  top:10px;
  left:10px;
  z-index:10020;
  width:42px;
  height:42px;
  border-radius:50%;
  border:1px solid rgba(199,155,69,.55);
  background:rgba(255,255,255,.93);
  color:#0b7652;
  box-shadow:0 5px 18px rgba(0,0,0,.16);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:20px;
  cursor:pointer;
  -webkit-tap-highlight-color:transparent;
  backdrop-filter:blur(6px);
}
.music-toggle.waiting{animation:musicPulse 1.4s ease-in-out infinite}
.music-toggle:active{transform:scale(.94)}
@keyframes musicPulse{0%,100%{box-shadow:0 5px 18px rgba(0,0,0,.16)}50%{box-shadow:0 0 0 7px rgba(199,155,69,.16),0 5px 18px rgba(0,0,0,.16)}}