kollapsminoriteten/wp-includes/blocks/audio/style-rtl.css

.wp-block-audio{
  box-sizing:border-box;
}
.wp-block-audio :where(figcaption){
  margin-bottom:1em;
  margin-top:.5em;
}
.wp-block-audio audio{
  min-width:300px;
  width:100%;
}