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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.

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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.

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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">
<h1 class="cool-border">Hello my little border!</h1>

<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Ut fringilla est ac odio mollis, id molestie lectus fermentum. Pellentesque vulputate porttitor ligula, nec pellentesque mi tempor ac. Donec pretium, nisi nec varius molestie, arcu ipsum hendrerit odio, et consectetur nunc quam scelerisque enim. Fusce sodales elit id rhoncus auctor. Sed ac dolor vel ipsum facilisis tincidunt. Nulla facilisi. Pellentesque vitae sem at risus rutrum egestas sit amet id tellus. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Nullam eleifend ligula quis ligula sollicitudin, eget faucibus ipsum cursus.</p></div>
              .cool-border::after {
    content: "";
    display: block;
    height: 7px;
    background-image: linear-gradient(120deg, #e5ea15, #00c4ff);
    position: absolute;
    top: calc(100% + 5px);
    left: 50%;
    width: 45%;
    transform: translateX(-50%) skew(-50deg);
.cool-border {
    position: relative;

h1 {
    width: 80vw;
    margin: 40px auto 80px;
    text-align: center;
    font-size: 5vw;
    line-height: 1.4em;
.container {
    max-width: 1000px;
    margin: auto;
    p {
        font-size: 1.3rem;
        line-height: 1.5em;
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