div.block.block-post-title-pronounciation {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background-color: #F5F5F5;
  border: 1px solid #E5E5E5;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
div.block.block-post-title-pronounciation svg {
  width: 16px;
  height: 16px;
}
div.block.block-post-title-pronounciation .play-button {
  display: block;
}
div.block.block-post-title-pronounciation .pause-button {
  display: none;
}
div.block.block-post-title-pronounciation.playing .play-button {
  display: none;
}
div.block.block-post-title-pronounciation.playing .pause-button {
  display: block;
}