html {
  height: 100%;
  background: radial-gradient(circle,#354450,#0a1b25);
}

.header {
  margin-top: 6rem;
  text-align: center; }

.center {
  margin-left: auto;
  margin-right: auto;
  display: block; }

.responsive {
  max-width: 100%;
  height: auto; }

/* Larger than phone */
@media (min-width: 550px) {
  .header {
    margin-top: 18rem; }
}

.social-link {
  margin: 0 5px;
  color: transparent;
}

.social-link:hover {
  color: transparent;
}

.brand-logo {
  max-width: 40px;
  fill: aquamarine;
}

.margin-top-row {
  margin-top: 15px;
}