footer {
  border-top: 1px solid grey;

  box-sizing: border-box;

  padding: 12px 0 12px 0;
  margin: 50px 50px 10px 50px;
}

.footer-lastmod,
.footer-contact {
  font-size: 0.857em;
  padding: 6px 0 6px 0;
}

.footer-contact {
  line-height: 24px;
  display: flex;
}

.footer-contact-link {
  margin-right: 10px;
}

@media (max-width: 780px) {
footer {
  margin: 50px 15px 10px 15px;
}
}