1.wp-block-audio{
  2  margin-left:0;
  3  margin-right:0;
  4  position:relative;
  5}
  6.wp-block-audio.is-transient audio{
  7  opacity:.3;
  8}
  9.wp-block-audio .components-spinner{
 10  margin-right:-9px;
 11  margin-top:-9px;
 12  position:absolute;
 13  right:50%;
 14  top:50%;
 15}