footer {
  grid-template-columns: 1.35fr 1fr .8fr 1.25fr;
  gap: 48px;
}

.social-links {
  display: grid;
  gap: 9px;
}

.social-links a {
  display: grid;
  grid-template-columns: 36px 1fr;
  grid-template-rows: auto auto;
  column-gap: 11px;
  align-items: center;
  margin: 0;
  padding: 7px 0;
  transition: color .2s, transform .2s;
}

.social-links a:hover {
  color: #fff;
  transform: translateX(3px);
}

.social-links b {
  grid-row: 1 / 3;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--red);
  color: #fff;
  font-family: Arial, sans-serif;
  font-size: .86rem;
  font-style: normal;
  line-height: 1;
}

.social-links em,
.social-links small {
  display: block;
  line-height: 1.2;
}

.social-links em {
  color: #e9ebed;
  font-size: .78rem;
  font-style: normal;
  font-weight: 700;
}

.social-links small {
  color: #737b87;
  font-size: .68rem;
}

@media (max-width: 900px) {
  footer {
    grid-template-columns: 1.2fr 1fr;
  }
}

@media (max-width: 600px) {
  footer {
    grid-template-columns: 1fr;
  }
}