.main-content h1, .main-content h2, .main-content h3,
.main-content h4, .main-content h5, .main-content h6 {
  color: #39454a;
}

div[class*='demo-'] {
  text-align: center;
}

ul {
  position: relative;
  list-style: none;
  padding: 0;
  display: inline-block;
}

ul:after {
   visibility: hidden;
   display: block;
   font-size: 0;
   content: " ";
   clear: both;
   height: 0;
}

.demo-1 ul {
  background-color: rgba(112, 112, 112, 0.7);
}

li {
  float: left;
}

li a {
  display: block;
  padding: 20px 30px;
  font-size: 12px;
  text-decoration: none !important;
  position: relative;
  z-index: 1;
}

.demo-1 a {
  color: #fff !important;

  text-transform: uppercase;
}

.hover-slider {
  position: absolute;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.demo-1 .hover-slider {
  background-color: rgba(255, 255, 255, 0.2);
}

.demo-2 ul li a {
  color: #000;
  font-size: 18px;
  font-weight: 400;
  padding: 10px 20px;
}

.demo-2 .hover-slider:before {
  content: '';
  display: block;
  height: 2px;
  position: absolute;
  left: 10px;
  right: 10px;
  background-color: #000;
  bottom: 0;
}