Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <ul class="menu">
  <li class="element"><a href="#">Tier 1a</a>
    <ul class="submenu">
      <li><a href="#">Tier 2a</a></li>
      <li><a href="#">Tier 2b</a></li>
      <li><a href="#">Tier 2c longer</a></li>
    </ul>
  </li>
  <li class="element"><a href="#">Tier 2a</a>
    <ul class="submenu">
      <li><a href="#">Tier 3a</a></li>
      <li><a href="#">Tier 3b longer</a></li>
      <li><a href="#">Tier 3c</a></li>
    </ul>
  </li>
  <li class="element"><a href="#">Tier 3a</a>
    <ul class="submenu">
      <li><a href="#">Tier 3a longer</a></li>
      <li><a href="#">Tier 3b</a></li>
      <li><a href="#">Tier 3c</a></li>
    </ul>
  </li>
  <li class="element last"><a href="#">Tier 4b</a>
    <ul class="submenu">
      <li><a href="#">Tier 4a</a></li>
      <li><a href="#">Tier 4b</a></li>
      <li><a href="#">Tier 4c longer</a></li>
    </ul>
  </li>
</ul>
<h1>Simple “Hoverintent” recreated with transition-delay()</h1>
<p>It can be annoying when just the hint of a mouseover can trigger CSS hover. Use a little bit of <code>transition-delay()</code> to reduce the flicker of unintended mouseover effects. Only if the mouse comes to rest will the effect be rendered. If a user moves their mouse quickly over the elements, nothing should happen.</p>
              
            
!

CSS

              
                body {
  font-family: sans-serif;
}
.menu,
.submenu {
  list-style: none; 
  padding-left: 0; 
}
.menu li {
  display: inline-block; 
  position: relative; 
}
.submenu {
  position: absolute; 
  min-width: 100%;
}
.submenu li {
  display: block; 
}
.element .submenu {
  -webkit-transition: opacity 250ms ease; 
  transition: opacity 250ms ease;
  opacity: 0;
  top: -99em;
}
.element .submenu {
  left: 0; 
}
.element.last .submenu {
  left: auto;
  right: 0; 
}
.element:hover .submenu {
  -webkit-transition-delay: 250ms; 
  transition-delay: 250ms; 
  opacity: 1;
  top: 100%; 
}
.menu a,
.submenu a {
  display: block; 
  padding: .5em .75em; 
  background-color: #bbb; 
  text-decoration: none; 
  white-space: nowrap; 
}
.menu a:hover,
.submenu a:hover,
.element:hover > a {
  background-color: #ddd; 
}
              
            
!

JS

              
                /* Intent here was to reproduce JS HoverIntent without the JS. Pure CSS3 effects instead */
              
            
!
999px

Console