<ul>
  <li><a href="#home">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>
ul {

  list-style-type: none;
  margin: 0;
  padding: 0;
  width: 200px;
  background-color: #f1f1f1;
  border: 1px solid #555;

}

li a {

  display: block;
  color: #000;
  padding: 8px 16px;
  text-decoration: none;

}

li {

  text-align: center;
  border-bottom: 1px solid #555;

}

li:last-child {

  border-bottom: none;

}

/* khi bạn di chuột qua sẽ thay đổi màu nền và màu chữ*/

li a:hover:not(.active) {

  background-color: #555;
  color: white;

}

li a.active {

  background-color: #04AA6D;
  color: white;

}

External CSS

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External JavaScript

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