.wp-embed{
  display: flex;
  flex-wrap:wrap;
}
.wp-embed-heading{
  order:2;
  flex-basis:80%;
  font-size: 18px;
}
.wp-embed-featured-image.square{
  order:1;
}
.wp-embed-meta, .wp-embed-site-title{
  display: none;
}
.wp-embed-footer{
  margin-top: 0;
}
.wp-embed-featured-image{
  margin-bottom: 0;
}
.wp-embed-heading:before{
  content:'関連記事';
  display:inline;
  padding:5px 10px;
  background-color: #000;
  color:#fff;
  font-size: 16px;
  font-weight: normal;
  width:100px;
  text-align: center;
}
@media screen and (max-width: 767px) {
  .wp-embed-heading{
    flex-basis:100%;
  }
  .wp-embed-featured-image.square{
    margin:auto;
    max-width:100%;
  }
  .wp-embed-heading:before{
    display: block;
    margin: 10px 0;
  }
}