css Audio - Active file-generic CSS - Active Generic - Active HTML - Active JS - Active SVG - Active Text - Active file-generic Video - Active header Love html icon-new-collection icon-person icon-team numbered-list123 pop-out spinner split-screen star tv

Pen Settings

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

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

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

Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

⚠️ This feature can only be used by logged in users.

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.

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.

            
              <div class="container">
  Original Image Version<br>
  <div class="box"><img src="http://rexmac.com/img/bs-docs-masthead-pattern.png" /></div>
</div>
<div class="container">
  CSS Version
  <div class="box bootstrap-docs-masthead-pattern"></div>
</div>
            
          
!
            
              .bootstrap-docs-masthead-pattern {
  background-image:
    /* Horizontal lines */
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    /* Vertical lines */
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px,transparent 1px),
    /* Diagonal lines - downward left ot right */
    repeating-linear-gradient(26.56505deg, rgba(255,255,255,0.07), rgba(255,255,255,0.07) 2px, transparent 2px, transparent 44.72136px),
    /* Diagonal lines - upward left to right */
    repeating-linear-gradient(153.43495deg, rgba(255,255,255,0.07), rgba(255,255,255,0.07) 2px, transparent 2px, transparent 44.72136px),
    /* All circles look better and more accurate in Mozilla Firefox, when using 149px and 150px as color stop points rather than 148px, and 149px. Unfortunately, it completely ruins the effect in Google Chrome :( */
    /* Central circle */
    radial-gradient(closest-side, transparent 0%,transparent 148px,rgba(255,255,255,0.07) 148px,rgba(255,255,255,0.07) 149px,transparent),
    /* Semi-circles - left and right */
    radial-gradient(closest-side, transparent 0%,transparent 148px,rgba(255,255,255,0.07) 148px,rgba(255,255,255,0.07) 149px,transparent),
    /* Semi-circles - top and bottom */
    radial-gradient(closest-side, transparent 0%,transparent 148px,rgba(255,255,255,0.07) 148px,rgba(255,255,255,0.07) 149px,transparent),
    /* Quadrant-circles(?) - four corners */
    radial-gradient(closest-side, transparent 0%,transparent 148px,rgba(255,255,255,0.07) 148px,rgba(255,255,255,0.07) 149px,transparent);
  background-size:
    100px 50px,  /* Horizontal lines */
    100px 50px,  /* Vertical lines */
    100px 50px,  /* Diagonal lines - downward left ot right */
    100px 50px,  /* Diagonal lines - upward left to right */
    300px 300px, /* Central circle */
    300px 300px, /* Semi-circles - left and right */
    300px 300px, /* Semi-circles - top and bottom */
    300px 300px; /* Quadrant-circles(?) - four corners */
  background-position:
    0 0,         /* Horizontal lines */
    -50px 0,     /* Vertical lines */
    -51px 0,     /* Diagonal lines - downward left ot right */
    -51px 0,     /* Diagonal lines - upward left to right */
    0px 0,       /* Central circle */
    150px 0,     /* Semi-circles - left and right */
    0 150px,     /* Semi-circles - top and bottom */
    150px 150px; /* Quadrant-circles(?) - four corners */
}

/* 300x300px box for demonstration purposes only */
.box {
  width: 300px;
  height: 300px;
  background-color: #222;
}

/* For demonstration purposes only*/
.container {
  float: left;
  text-align: center;
}
            
          
!
999px
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
Loading ..................

Console