<nav id="social">
  <a href="https://facebook.com"></a>   
  <a href="https://twitter.com"></a>
</nav>

html, body {
  height: 100%; 
}

body {
  display: grid;
  justify-items: center;
  align-items: center;
}

a {
  display: flex;
  align-items: center;
  color: #333;
  font-size: 1.5em;
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

[href]::before {
  content: " ";
    margin: 0 10px 0 0;
  font-family: "Font Awesome 5 Brands";
    font-weight: 400;   
    font-size: 1.2em;
}

[href*="facebook"]::before {
  content: "\f09a";
}

[href*="twitter"]::before {
  content: "\f081";
}

[href*="instagram"]::before {
  content: "\f16d";
}

[target]::after {
  content: "\f35d";
  display: inline-block;
  margin: 0 10px 0 0.75em;
  color: #999;
  font-family: "Font Awesome 5 Free";
  font-weight: 400;   
  font-size: 0.6em;
}