body {
	margin: 25px;
	font-family: Arial, Helvetica, sans-serif;
	font-size: 1em;
	text-align: center;
}

* {
  color: blue;
}


footer {
	  margin-top: 50px;
	  margin-bottom: 50px;
}


img {
	border: 2px solid red;
	border-radius: 10px;
}


.external-link::after {
	content: ' (external)';
	color: red;
}