<div class="main-container">
  <ul>
    <li><a href="#">Link1</a></li>
    <li><a href="#">Link2</a></li>
    <li><a href="#">Link3</a></li>
    <li><a href="#">Link4</a></li>
    <li><a href="#">Link5</a></li>
    <li class="slide"></li>
  </ul>
</div>

body {
  margin: 0;
  padding: 0;
  background: #34495e;
  font-family: sans-serif;
}
.main-container {
  width: 100%;
  height: 100%;
}
ul {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  border: 1px solid #2980b9;
  background: #000;
  overflow: hidden;
  box-shadow: 0 0 0 5px #333;
  border-radius: 30px;
  margin: 0;
  padding: 0;
}
ul li {
  list-style: none;
  width: 150px;
}
ul li a {
  text-decoration: none;
  display: block;
  padding: 20px;
  text-align: center;
  color: #fff;
  transition: .5s;
}
ul li:hover a {
  color: #222222;
}
.slide {
  position: absolute;
  height: 100%;
  top: 0;
  left: calc(50% - 75px);
  z-index: -1;
  transition: .5s;
}
ul li:nth-child(1):hover ~ .slide {
  left: 0;
  background: #fff;
}
ul li:nth-child(2):hover ~ .slide {
  left: 150px;
  background: #fff;
}
ul li:nth-child(3):hover ~ .slide {
  left: 300px;
  background: #fff;
}
ul li:nth-child(4):hover ~ .slide {
  left: 450px;
  background: #fff;
}
ul li:nth-child(5):hover ~ .slide {
  left: 600px;
  background: #fff;
}