<div class="cp_navi01">
<ul>
  <li><a href="#home" class="active">Home</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li><a href="#about">About</a></li>
</ul>
</div>

.cp_navi01 ul {
  width: 200px;/*メニューの幅*/
  margin: 0;
  padding: 0;
  list-style-type: none;
  background-color: #eeeeee;
}
.cp_navi01 li a {
  display: block;
  padding: 8px 16px;
  text-decoration: none;
  color: #000000;
  transition: all .3s;
}
.cp_navi01 li {
  text-align: center;
}
.cp_navi01 li:last-child {
  border-bottom: none;
}
.cp_navi01 li a.active {
  color: #ffffff;
  background-color: #da3c41;
}
.cp_navi01 li a:hover:not(.active) {
  color: #ffffff;
  background-color: #1b2538;
}