Pen Settings



CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URLs added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.

+ add another resource


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


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.


Auto Save

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.


                <p class="intro">スクロールしてください<br>↓↓↓</p>
<div class="container">
  <div class="message">
    <!-- 円弧 -->
    <svg class="gradient-circle-container" width="500" height="500" viewBox="0 0 500 500">
        <!-- グラデーションの始点(x1,y1) 終点(x2,y2) -->
        <linearGradient id="linear-gradient" x1="0" y1="0.5" x2="1"  y2="0.5">
          <!-- 始点の色 -->
          <stop offset="0" stop-color="#FD9BB8"></stop>
          <!-- 中間の色 -->
          <stop offset="0.5" stop-color="#CF8BF3"></stop>
          <!-- 終点の色 -->
          <stop offset="1" stop-color="#A770EF"></stop>
      <circle class="gradient-stroke-circle" cx="250" cy="250" r="225" stroke="url(#linear-gradient)"></circle>
    <!-- 文章エリア -->
    <div class="message__content">
        <h2 class="message__title">TITLE</h2>
        <p class="message__text">
            Lorem ipsum dolor sit amet,<br>
            consectetur adipiscing elit,<br>
            sed do eiusmod tempor incididunt<br>
            ut labore et dolore magna aliqua


    padding: 0;
    margin: 0;
    box-sizing: border-box;
    width: 100%;
    min-height: 100vh;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 200px 0;
    overflow: hidden;

/* ===============================================
# message
=============================================== */
    width: 100%;
    height: fit-content;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    font-size: 50px;
    text-align: center;
    font-family: 'Signika Negative';
    font-size: 18px;
    text-align: center;
    font-family: 'Signika Negative';
    margin-top: 24px;
/* ===============================================
# circle
=============================================== */
    max-width: 580px;
    width: 100%;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    padding: 0 40px;
    z-index: -1;/*テキストを選択できるように */
    transform-origin: center center;
.gradient-stroke-circle {
    fill: none;/* 塗りつぶしをなしにする */
    stroke-width: 50;/* 円の線の太さ50 */
    stroke-dasharray: 1060 1413;/* 円の線のスタイルを指定。ここでは、線を75%(1060)と円周を(1413)に設定 */
    stroke-linecap: round;/* 円の線端を丸くする */
    /* transform: rotate(-90deg); /* 円を-90度回転させる 反転させたいときに使用 */
    transform-origin: center center; /* 回転の中心点を円の中心に設定 */


    const tl = gsap.timeline({
        start:'center center',
    .fromTo('.message__content > *',{autoAlpha:0,y:20},{autoAlpha:1,y:0,stagger:.3})
    .fromTo('.gradient-stroke-circle',{autoAlpha:0,'stroke-dasharray':'0 1413'},{autoAlpha:1,'stroke-dasharray':'1060 1413',duration:1},'<')