Moving arrow navigation with CSS only

dabblet.css

/**
 * Moving arrow navigation with CSS only
 */

ul {
  position: relative;
  margin: 3em 0;
  list-style: none;
}

li {
  display: inline-block;
  left: 75px;
}

ul:hover li:not(:nth-of-type(2)) {
  left: 120px;
}


li a {
  padding: 0 1em;
  text-decoration: none;
}

.arrow {
  position: absolute;
  left: inherit;
  bottom: -8px;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-bottom: 5px solid red;  
}

/* basic */

html {
  font-family: sans-serif;
}

a {
  color: #777;
}

dabblet.html

<ul>
	<li><a href="#1">Point 1</a></li><li><a href="#2">Point 2</a></li><li><a href="#3">Point 3</a></li><li><span class="arrow"></span></li>
</ul>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"separate","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}