cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

Pen Settings

CSS Base

Vendor Prefixing

Add External CSS

These stylesheets will be added in this order and before the code you write in the CSS editor. You can also add another Pen here, and it will pull the CSS from it. Try typing "font" or "ribbon" below.

Quick-add: + add another resource

Add External JavaScript

These scripts will run in this order and before the code in the JavaScript editor. You can also link to another Pen here, and it will run the JavaScript from it. Also try typing the name of any popular library.

Quick-add: + add another resource

Code Indentation

     

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.

            
              <header>
  <h1>This Demo uses <a href="http://gridbyexample.com/">CSS Grid</a>, <a href="https://css-tricks.com/snippets/css/a-guide-to-flexbox/">Flexbox</a>, & <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/@supports">@supports</a></h1>
</header>

<div  class="sidebar">
  <h1>Minmax Area</h1>
  <p>Min: 150px</p>
  <p>Max: 400px</p>
</div>
<section class="top-left"></section>
<section class="top-right"></section>
<section class="bottom-left"></section>
<section class="bottom-right"></section>

<footer>
  <p>Make sure you are on Chrome 57+ or Firefox 52+</p>
</footer>

            
          
!
            
              // Shared Things

@import url('https://fonts.googleapis.com/css?family=Space+Mono');
$tri-color: yellow;
$img-sec-h: 45vh;
$gutter: 8px;

body {
  font-family: 'Space Mono';
  text-align: center;
  padding: 0;
  margin: 0;
}

// Flexbox within the grid
header, footer, section {
  display: flex;
  align-items: center;
  justify-content: center;
}

h1 {
  font-size: 1.4rem;
  line-height: 1.2;
}

a {
  color: #a60;
}

footer p {
 padding: 2em 0;
}

.sidebar {
  background: grey;
}

.top-left {
  background-image: url('https://source.unsplash.com/random');
}

.top-right {
  background-image: url('https://source.unsplash.com/category/buildings');
}

.bottom-left {
  background-image: url('https://source.unsplash.com/category/nature');
}

.bottom-right {
  background-image: url('https://source.unsplash.com/category/technology');
}

// This is just fun with blend modes because why not?
section {
  background-position: 50%;
  background-size: cover;
  position: relative;

  &:before {
    content: '';
    background-color: darkblue;
    mix-blend-mode: difference;
    width: $img-sec-h / 1.5;
    height: $img-sec-h / 1.5;
    border-radius: 50%;
  }
}

// Grid Things for super modern browsers!

@supports (display: grid) {
  body {
    // Grid!
    display: grid;
    grid-gap: $gutter;
    grid-template-columns: minmax(150px, 400px) auto;
    grid-template-rows: 10vh $img-sec-h $img-sec-h auto;
    grid-template-areas:
      "side     header       header"
      "side     top-left     top-right"
      "side     bottom-left  bottom-right"
      "footer   footer       footer";
  }
  
  .sidebar {
    grid-area: side;
  }

  header {
     grid-area: header;
  }

  footer {
    grid-area: footer;
  }

  .top-left {
    grid-area: top-left;
  }

  .top-right {
    grid-area: top-right;
  }

  .bottom-left {
    grid-area: bottom-left;
  }

  .bottom-right {
    grid-area: bottom-right;
  }
}

@supports not (display: grid) {
  body {
    display: flex;
    flex-flow: row wrap;
  }
  
  // set height on header
  header {
    height: 10vh;
  }
  
  header, footer {
    width: 100%;
  }
  
  // setting height and flex positions on image elements
  .top-left,
  .top-right,
  .bottom-left,
  .bottom-right {
    height: $img-sec-h;
    flex: 0 1 calc(50% - #{$gutter/2});
  }
  
  // gutter to match grid
  .top-left,
  .bottom-left {
    margin-right: $gutter;
  }
  
  .top-left,
  .top-right {
    margin-bottom: $gutter;
  }
}
            
          
!
            
              // This Demo requires CSS grid browser support
// Demo with Flexbox fallback is here:
// https://codepen.io/una/pen/BWPbzV
            
          
!
999px
Loading ..................

Console