body { font-family: Arial, sans-serif; }
.hero img { border-radius: 8px; }





a[rel="external"]::after {
  content: "↗";
  display: inline-block;
  margin-left: 0.3em;
  font-size: 1em;
  font-weight:bold;
  line-height: 1;
  vertical-align: middle;

  
    background-color: #FFF;
  color: silver;
  border: 1px solid #444;
  border-radius: 30%;
padding: 0 0.2em 0.1em 0.1em;

}

a[rel="external"]:hover::after {
  color:blue;
  background-color: #ddd;
  border-color: #bbb;
}