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.

Editor Settings

Code Indentation

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

Visit your global Editor Settings.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

HTML

            
              <h1>Handling the diagonal submenu problem in CSS (without JavaScript)</h1>
<h2>Illustration of the problem</h2>
<p>Try to mouse over the Second navigation item and then try to reach the text in the sub navigation in a straight line, crossing the area of First navigation, thus accidentally activating the sub of First.</p>
<ul class="nav">
  <li class="nav-item bg-1">
    <a href="#" class="nav-link">First
      <div class="after"></div>
    </a>
    <div class="sub-nav bg-1">
      First sub
    </div>
  </li>
  <li class="nav-item bg-2">
    <a href="#" class="nav-link">Second</a>
    <div class="sub-nav bg-2">
      Second sub
    </div>
  </li>
  <li class="nav-item bg-3">
    <a href="#" class="nav-link">Third</a>
    <div class="sub-nav bg-3">
      Third sub
    </div>
  </li>
</ul>

<h2>The solution with hover help areas visible</h2>
<ul class="nav">
  <li class="nav-item bg-1">
    <a href="#" class="nav-link hover-help hover-help-visible">First
      <div class="after"></div>
    </a>
    <div class="sub-nav bg-1">
      First sub
    </div>
  </li>
  <li class="nav-item bg-2">
    <a href="#" class="nav-link hover-help hover-help-visible">Second</a>
    <div class="sub-nav bg-2">
      Second sub
    </div>
  </li>
  <li class="nav-item bg-3">
    <a href="#" class="nav-link hover-help hover-help-visible">Third</a>
    <div class="sub-nav bg-3">
      Third sub
    </div>
  </li>
</ul>

<h2>The solution - with invisible hover help</h2>
<ul class="nav">
  <li class="nav-item bg-1">
    <a href="#" class="nav-link hover-help">First
      <div class="after"></div>
    </a>
    <div class="sub-nav bg-1">
      First sub
    </div>
  </li>
  <li class="nav-item bg-2">
    <a href="#" class="nav-link hover-help">Second</a>
    <div class="sub-nav bg-2">
      Second sub
    </div>
  </li>
  <li class="nav-item bg-3">
    <a href="#" class="nav-link hover-help">Third</a>
    <div class="sub-nav bg-3">
      Third sub
    </div>
  </li>
</ul>
            
          
!

CSS

            
              * {
  font-family: sans-serif;
  box-sizing: border-box;
}
body {
  padding: 1rem;
}

.nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  position: relative;
  background-color: dodgerblue;
  margin-bottom: 16rem;
}
.nav-link {
  display: block;
  flex: 1;
  position: relative;
  padding: 2rem 4.5rem;
  color: white;
  text-decoration: none;
  border-right: 1px solid white;
}
@keyframes subnavHoverHelp {
    0% {
      width: 100%;
    }
    99% {
      width: 100%;
    }
    100% {
      width: 0;
    }
}

.hover-help:hover::before,
.hover-help:hover::after {
  content: "";
  position: absolute;
  z-index: 1000;
  bottom: 0;
  height: 80%;
  animation: subnavHoverHelp 1.2s;
}
.hover-help-visible:hover::before,
.hover-help-visible:hover::after {
  background-color: fuchsia;
  opacity: .3;
}
.hover-help:hover::before {
  left: -100%;
  clip-path: polygon(100% 0, 0% 100%, 100% 100%);
}
.hover-help:hover::after {
  right: -100%;
  clip-path: polygon(0 0, 0% 100%, 100% 100%);
}

.nav-item:hover .sub-nav {
  display: block;
}

.sub-nav {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  padding: 2rem;
  width: 100%;
  height: 14rem;
  color: white;
}

.bg-1 {
  background-color: darkmagenta;  
}
.bg-2 {
  background-color: navy; 
}
.bg-3 {
  background-color: darkgreen;    
}
            
          
!

JS

            
              
            
          
!
999px

Console