#mainNav .navbar-nav li.nav-item a.nav-link {
  color: #fff;
  letter-spacing: 1px;
}

#mainNav .navbar-nav li.nav-item a.nav-link:hover {
  color: #18bc9c;
}

.btn-social {
  width: 3.25rem;
  height: 3.25rem;
  line-height: 2rem;
}

section {
  padding: 6rem 0;
}

@media (min-width:992px) {
  header.masthead {
    padding-top: calc(6rem + 106px);
    padding-bottom: 6rem;
  }
}

header.masthead {
  padding-top: calc(6rem + 102px);
  padding-bottom: 6rem;
}

@media (min-width:992px) {
  #mainNav {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
    transition: padding-top .3s,padding-bottom .3s;
  }
}

.copyright {
  background-color: #1a252f;
}

.btn.btn-outline-dark.btn-social.text-center.rounded-circle {
  border-width: 2px;
}

.btn-outline-light {
  border-width: 2px;
}

.btn {
  font-size: 1.2rem;
}

.btn-primary {
  background-color: #18bc9c;
  border-color: #20b396;
}

.btn-primary:active, .btn-primary:focus, .btn-primary:hover {
  background-color: #118871;
  border-color: #118871;
}