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 is required to process package imports. If you need a different preprocessor remove all packages first.

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

Behavior

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If active, Pens will autosave every 30 seconds after being saved once.

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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

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Visit your global Editor Settings.

HTML

              
                <div lang="zh-TW">
<h1>水调歌头</h1>
<p>明月几时有把酒问青天不知天上宫阙今夕是何年我欲乘风归去又恐琼楼玉宇高处不胜寒起舞弄清影何似在人间转朱阁低绮户照无眠不应有恨何事长向别时圆人有悲欢离合月有阴晴圆缺此事古难全但愿人长久千里共婵娟</p>
</div>
              
            
!

CSS

              
                div {
  writing-mode: vertical-rl;
  font-size: 16px;
  font-family: sans-serif;
}

h1 {
  text-align: center;
  font-size: 1.375em;
}

p {
  max-inline-size: 17ch;
}
              
            
!

JS

              
                
              
            
!
999px

Console