1.wp-block-post-author{
  2  box-sizing:border-box;
  3  display:flex;
  4  flex-wrap:wrap;
  5}
  6.wp-block-post-author__byline{
  7  font-size:.5em;
  8  margin-bottom:0;
  9  margin-top:0;
 10  width:100%;
 11}
 12.wp-block-post-author__avatar{
 13  margin-left:1em;
 14}
 15.wp-block-post-author__bio{
 16  font-size:.7em;
 17  margin-bottom:.7em;
 18}
 19.wp-block-post-author__content{
 20  flex-basis:0;
 21  flex-grow:1;
 22}
 23.wp-block-post-author__name{
 24  margin:0;
 25}