.project-navigation li {
  display: inline-block;
  font-size: 18px;
  margin-right: 20px;
  font-weight: bold;
  transition: all .5s;
  position: relative;
}

.project-navigation li.active,
.project-navigation li:hover {
  color: #AB1E22;
}

.project-navigation li a {
  color: inherit;
  text-decoration: none;
}

.project-navigation {
  padding: 0;
  margin-bottom: -20px;
  width: 100%;
}

titel {
  font-size: 1.4em;
  font-weight: bold;
}