#sound_switcher {
  position: fixed;
  z-index: 9999;
  bottom: 30px;
  right: 30px;
  width: 36px;
  height: 36px;
  line-height: 36px;
  opacity: 0.5;
  transition: 0.2s ease all;
  -webkit-transition: 0.2s ease all;
  border-radius: 50%;
  -webkit-border-radius: 50%;
  box-shadow: 0 0 15px 5px #fff;
  cursor: pointer;
  text-align: center;
}

#sound_switcher .fa {
  color: #fff;
  line-height: 36px;
}

#sound_switcher:hover {
  opacity: 0.7 !important;
}

#sound_switcher .fa-play {
  display: none;
  position: relative;
  right: -1px;
  top: 1px;
}

.play_sound_switcher .fa-pause {
  display: none !important;
}

.play_sound_switcher .fa-play {
  display: block !important;
}