nav {
  position: relative;
  z-index: 2;
}
nav .brand-logo {
  font-size: 1.75em;
  letter-spacing: -0.05em;
}

main {
  position: relative;
  z-index: 1;
  padding: 20px;
}

main .page-footer {
  margin: 0 -20px -20px -20px;
}

.page-footer > .footer-copyright {
  padding: 20px;
}

.responsive-overflow {
  overflow-x: auto;
}