html {
  scroll-behavior: smooth;
}
section:before {
  height: 50px;
  content: "";
  display: block;
}
section {
  padding: 0 0 35px;
  background: #fff;
}

.parallax-container {
  height: 700px;
  width: 100%;
}

pre {
  overflow: auto;
}

pre code {
  word-wrap: normal;
  white-space: pre;
}

footer {
  background: #000;
  color: #ddd;
  padding: 30px 0 30px;
  text-align: center;
}

footer a {
  color: #ddd;
  text-decoration: none;
}

footer a:hover {
  color: #eee;
  text-decoration: underline;
}

.dropdown-divider {
  height: 0;
  margin: 0.5rem 0;
  overflow: hidden;
  border-top: 1px solid #e9ecef;
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.25rem 1.5rem;
  clear: both;
  font-weight: 400;
  color: #212529;
  text-align: inherit;
  white-space: nowrap;
  background-color: transparent;
  border: 0;
}

.dropdown-item:focus,
.dropdown-item:hover {
  color: #16181b;
  text-decoration: none;
  background-color: #f8f9fa;
}

.dropdown-item.active,
.dropdown-item:active {
  color: #fff;
  text-decoration: none;
  background-color: #007bff;
}

.dropdown-item.disabled,
.dropdown-item:disabled {
  color: #6c757d;
  background-color: transparent;
}