div.social-links-ctrl {
  display: flex;
}
div.social-links-ctrl a {
  background-color: #f0f0f0;
  display: block;
  height: 32px;
  width: 32px;
}
div.social-links-ctrl a svg {
  fill: #333;
  height: 100%;
  width: 100%;
}
div.social-links-ctrl a.svg-reverse {
  background: #333;
  border-radius: 2px;
}
div.social-links-ctrl a.svg-reverse svg {
  fill: #f0f0f0;
  height: 75%;
  margin: 12.5%;
  width: 75%;
}
div.social-links-ctrl a + a {
  margin-left: 8px;
}