Pen Settings

HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.

CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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.

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About External Resources

You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.

If the stylesheet you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

You can also link to another Pen here, and we'll pull the CSS from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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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.

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About External Resources

You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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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.

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About Packages

Using packages here is powered by Skypack, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ES6 import usage.

All packages are different, so refer to their docs for how they work.

If you're using React / ReactDOM, make sure to turn on Babel for the JSX processing.

Behavior

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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

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Visit your global Editor Settings.

HTML 

              
                <!-- Appears on Tiny Blueprint (https://www.tiny.cloud/blog/) in articles:
 - Add placeholder text to TinyMCE-->
<div class="editor-wrap" id="editor-wrap">
  <div class="editor-content" id="editor-content"></div>
  <div class="editor-toolbar" id="editor-toolbar"></div>
</div>
!

CSS 

              
                body {
  margin: 2rem 0.5rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", Helvetica, Arial,
    sans-serif;
}

main {
  max-width: 720px;
  margin: auto;
}

/* The editor wrap element that we use to encapsulate the editor */
.editor-wrap {
  border: 1px solid #ccc;
  padding: 0 0.5rem;
  position: relative;
  border-radius: 4px;
  transition: box-shadow 0.15s;
  padding-bottom: 0;
}

.editor-wrap.focused {
  box-shadow: 0 0 0 3px rgba(28, 108, 161, 0.08) inset;
}

/* The element that turns into a TinyMCE editor */
.editor-content {
  transition: min-height 0.25s, padding-bottom 0.25s;
  min-height: 0;
  outline: none;
}

/* Set the minimum height and make space for the toolbar */
.editor-wrap.focused .editor-content {
  min-height: 140px;
  padding-bottom: 40px;
}

/* The toolbar is absolute positioned to better support a smooth slide in/out. */
/* Without it the toolbar causes the height to jump when the toolbar toggles */
.editor-toolbar {
  position: absolute;
  bottom: 3px;
  left: 3px;
  right: 3px;
  opacity: 0;
  transition: opacity 0.1s;
  transition-delay: 0.15s;
}

.editor-wrap.focused .editor-toolbar {
  opacity: 1;
}

/* Below is the content styles, in this case they are global */
/* and not namespaced to `.editor-content` */
a,
a:link {
  color: blue;
}
a:visited {
  color: purple;
}
a:hover {
  color: green;
}
a:active {
  color: red;
}

h1 {
  font-size: 1.75rem;
  font-weight: strong;
}

h2 {
  font-size: 1.5rem;
  font-weight: strong;
}

h3 {
  font-size: 1rem;
  font-weight: strong;
}

hr {
  margin: 1.5rem 0;
  padding: 0.5rem 0;
  border: 0;
}

hr::after {
  content: "";
  display: block;
  border-width: 0 0 1px 0;
  border-color: #ccc;
  border-style: solid;
}

img {
  max-width: 100%;
  height: auto;
}
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JS 

              
                tinymce.init({
  selector: "#editor-content",
  plugins: "emoticons hr image link lists charmap table",
  toolbar: "formatgroup paragraphgroup insertgroup",
  placeholder: "Ask a question or post an update...",
  menubar: false,
  skin: "naked",
  icons: "thin",

  // Enable inline mode
  // https://www.tiny.cloud/docs/configure/editor-appearance/#inline
  inline: true,

  // Render the toolbar in this container.
  // https://www.tiny.cloud/docs/configure/editor-appearance/#fixed_toolbar_container
  fixed_toolbar_container: "#editor-toolbar",

  // Makes menus move upwards
  // https://www.tiny.cloud/docs/configure/editor-appearance/#toolbar_location
  toolbar_location: "bottom",

  // Remove the manual image resizing as we're using percentage widths
  // https://www.tiny.cloud/docs/configure/advanced-editing-behavior/#object_resizing
  object_resizing: false,

  // Hide the right click context menus
  // https://www.tiny.cloud/docs/configure/editor-appearance/#contextmenu
  contextmenu: false,

  // Create three custom toolbar groups
  // https://www.tiny.cloud/docs/configure/editor-appearance/#toolbar_groups
  toolbar_groups: {
    formatgroup: {
      icon: "format",
      tooltip: "Formatting",
      items:
        "bold italic underline strikethrough | forecolor backcolor | superscript subscript | removeformat"
    },
    paragraphgroup: {
      icon: "paragraph",
      tooltip: "Paragraph format",
      items:
        "h1 h2 h3 | bullist numlist | alignleft aligncenter alignright | indent outdent"
    },
    insertgroup: {
      icon: "plus",
      tooltip: "Insert",
      items: "link image emoticons charmap hr"
    }
  },

  // On mobile, toolbar_mode is sliding by default which is not compatible
  // with toolbar_groups. Therefore we explicitly set toolbar_mode to floating
  // on mobile and touch devices.
  // https://www.tiny.cloud/docs/configure/editor-appearance/#toolbar_mode
  // https://www.tiny.cloud/docs/configure/editor-appearance/#mobile
  mobile: {
    toolbar_mode: "floating"
  },

  setup: (editor) => {
    // Apply a custom class to the wrapper element when the editor gets focus
    // https://www.tiny.cloud/docs/advanced/events/
    editor.on("focus", () => {
      document.getElementById("editor-wrap").classList.add("focused");
    });

    // Remove the custom class when the editor loses focus
    // https://www.tiny.cloud/docs/advanced/events/
    editor.on("blur", () => {
      document.getElementById("editor-wrap").classList.remove("focused");
    });

    // Register a custom context toolbar for images
    // https://www.tiny.cloud/docs/ui-components/contexttoolbar/#registeringacontexttoolbar
    editor.ui.registry.addContextToolbar("editimage", {
      predicate: (node) => {
        return node.nodeName.toLowerCase() === "img";
      },
      items: "editimage removeimage",
      position: "node",
      scope: "node"
    });

    // Register a custom edit image button
    // https://www.tiny.cloud/docs/ui-components/toolbarbuttons/
    editor.ui.registry.addButton("editimage", {
      icon: "edit-block",
      onAction: () => {
        // Display the image dialog
        // https://www.tiny.cloud/docs/plugins/image/#commands
        editor.execCommand("mceImage");
      }
    });

    // Register a custom remove image button
    // https://www.tiny.cloud/docs/ui-components/toolbarbuttons/
    editor.ui.registry.addButton("removeimage", {
      icon: "remove",
      onAction: () => {
        // Get the currently selected content (called "node") and delete it.
        // https://www.tiny.cloud/docs/api/tinymce.dom/tinymce.dom.selection/
        // https://www.tiny.cloud/docs/api/tinymce.html/tinymce.html.node/
        const node = tinymce.activeEditor.selection.getNode();
        node.remove();
      }
    });
  }
});
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999px

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