.yab-audio-button {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background-color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 5px rgba(0,0,0,.3);
  transition: background-color .3s;
  z-index: 1001;
}
.yab-audio-button:hover { background-color: #ffffff; }
.yab-audio-button:disabled { opacity: .5; cursor: not-allowed; }
.yab-audio-button:focus-visible { outline: 2px solid; outline-offset: 2px; }

.yab-play-icon { display:flex; align-items:center; justify-content:center; }
.yab-play-icon img { width:24px; height:24px; display:block; }
.yab-fallback { font-size:18px; line-height:1; }

#yab-autoplay-prompt {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,.7);
  color: #fff;
  padding: 16px 20px;
  border-radius: 6px;
  z-index: 1000;
  font-size: 16px;
  text-align: center;
}