/* Display an icon after external links */
div.md-content a[href^="http://"]:not([href*="test.rstudio.com"]):after,
div.md-content a[href^="https://"]:not([href*="test.rstudio.com"]):after,
div.md-content a[href^="//"]:not([href*="test.rstudio.com"]) {
    content: url(external-link-alt-regular.svg);
    vertical-align: 15%;
    display: inline-block;
    text-decoration: none;
    padding-left: 3px;
}