html, body {
height: 100%;
margin: 0;
padding: 0;
font-family: "Verdana", serif;
color: #555;
}
.hidden { display: none; }
.external::after {
font-family: "Font Awesome 5 Free";
font-weight: 600;
content: " \f35d";
font-size: 10px;
vertical-align: super;
}