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 includes JSX processing.

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

Packages

Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.

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

              
                <svg xmlns="http://www.w3.org/2000/svg" height="200" width="200">
  <mask id="mask1" maskUnits="userSpaceOnUse">
    <path d="M 31.9487,100.851 C 96.8992,64.2568 175.699,103.585 161.504,136.176" />
  </mask>
  <mask id="mask2" maskUnits="userSpaceOnUse">
    <path d="M 161.504,136.1 C 151.163,159.889 120.894,170.131 88.2534,145.001 62.0856,118.537 58.512,76.2969 69.8584,29.8113" />
  </mask>
  <path mask="url(#mask1)" d="M 168.206,138.99 C 170.791,131.695 172.093,126.393 172.093,123.083 172.093,118.157 170.167,113.218 166.296,108.295 162.427,103.37 156.861,99.2861 149.894,95.4321 122.211,80.0994 97.5906,75.2909 64.5063,79.4735 47.3629,81.6329 39.9523,86.638 34.9294,88.4823 32.3111,89.4367 34.386,97.3431 38.2888,109.578 47.05,105.626 56.6345,100.735 66.5649,98.3311 78.4879,95.4321 89.9662,93.0111 93.6059,93.0111 102.499,93.0111 111.292,94.8891 119.971,98.6441 128.666,102.514 136.175,107.7 142.5,114.239 148.938,120.777 153.434,126.458 155.46,133.539 Z" />
  <path mask="url(#mask2)" d="M 155.46,133.539 C 152.891,136.537 148.873,140.079 143.949,141.905 139.008,143.832 134.183,144.804 129.473,144.804 116.612,144.804 105.726,140.457 96.8168,131.778 88.023,123.198 80.6617,111.505 76.8739,86.8862 73.6627,66.0205 77.7468,43.228 81.3864,34.3174 L 58.9894,30.707 C 52.4351,48.8322 50.5413,66.6778 51.974,91.1671 53.8844,124.12 64.2759,142.218 77.0386,154.126 89.8015,166.131 106.204,172.141 126.245,172.141 132.471,172.141 138.794,170.905 145.233,168.435 151.672,166.081 156.217,163.248 158.902,159.922 160.614,157.88 164.667,149.315 168.206,138.99 161.003,134.478 158.62,134.617 155.46,133.539 Z" />
</svg>
              
            
!

CSS

              
                mask path {
    fill: none;
    stroke: white;
    stroke-width: 32;
}
#mask1 path {
    stroke-dasharray: 160 160;
    stroke-dashoffset: 160;
    animation: brush1 5s linear infinite;
}
@keyframes brush1 {
      0% { stroke-dashoffset: 160; }
     12% { stroke-dashoffset: 160; }
     44% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: 0; }
}
#mask2 path {
    stroke-dasharray: 210 210;
    stroke-dashoffset: 210;
    animation: brush2 5s linear infinite;
}
@keyframes brush2 {
      0% { stroke-dashoffset: 210; }
     44% { stroke-dashoffset: 210; }
     86% { stroke-dashoffset: 0; }
    100% { stroke-dashoffset: 0; }
}
              
            
!

JS

              
                
              
            
!
999px

Console