--- title: "Adding or changing the editor content CSS" description: "Options for changing the editor content CSS." canonical_url: "https://www.tiny.cloud/docs/tinymce/latest/add-css-options/" md_url: "https://www.tiny.cloud/docs/tinymce/7/add-css-options/index.md" version: "7" last_updated: "2024-03-04T11:06:50Z" tokens: 2287 --- Important This page documents TinyMCE 7. For new projects, Tiny recommends using the latest, most up-to-date version. [See TinyMCE 8 documentation](../../latest/add-css-options/). # Adding or changing the editor content CSS ## Add CSS and styles to the editor ### `content_css` The `content_css` option loads the specified CSS files into the editable area. **Type:** `String`, `Array` > **Note:** This option is intended for use with TinyMCE’s classic mode, as the editable area is sandboxed within an iframe. For inline mode editors, relevant CSS stylesheets should be loaded as part of the webpage TinyMCE is rendered in, not using the `content_css` option. TinyMCE comes with six content CSS files: - `default` - `dark` - `document` - `writer` - `tinymce-5` - `tinymce-5-dark` These content CSS files can be enabled in the editor using the [`content_css` configuration option](#content_css). For example: ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: 'writer' }); ``` These content CSS files can also be used as a template for creating a custom content CSS file for the editor. For the CSS files, see: [tinymce-dist GitHub Repository - Content CSS files](https://github.com/tinymce/tinymce-dist/tree/master/skins/content). Tiny also provides content CSS files with the enhanced skins, for a list of premium content CSS files, see: [Enhanced Skins & Icon Packs](../enhanced-skins-and-icon-packs/). Tiny recommends using the same CSS for both the editor and the page where the editor content will be rendered. If a relative path is specified, it will be resolved in relation to the URL of the webpage TinyMCE is rendered in. #### Absolute path example ```js // File: http://domain.mine/mysite/index.html tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: '/myLayout.css' // resolved to http://domain.mine/myLayout.css }); ``` #### Relative path example ```js // File: http://domain.mine/mysite/index.html tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: 'mycontent.css' // resolved to http://domain.mine/mysite/mycontent.css }); ``` To load multiple stylesheets, provide the paths as either a array of strings or a comma-separated string. #### Using multiple stylesheets example ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: 'mycontent.css,mycontent2.css' // includes both CSS files in header }); ``` #### Using multiple stylesheets as array example ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: [ 'mycontent.css', 'mycontent2.css' ] // includes both CSS files in header, ability to have CSS with `,` in URL }); ``` #### Browser caching Browser caching might cause TinyMCE to not read the contents of a changed CSS file. You’ll see "old" colors & styles. One solution is to manually clear the browser cache when the file for `content_css` or `editor_css` has changed. Another solution is to use an old hack which adds a bogus parameter to the URL containing a present time stamp like "myFile.css?bogus=10023561235". Possible solutions could look like this: ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: 'path/myfile.css?' + new Date().getTime() }); ``` ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: 'path/myscript.php?myParam=myValue&bogus=' + new Date().getTime() }); ``` > **Tip:** To remove the margins between paragraphs (sometimes requested for using TinyMCE in email clients), add the following style to the content CSS: > > ```css > /* > Removes margins on paragraphs, > might be useful for mail clients > */ > p { margin: 0 } > ``` ### `content_css_cors` When `content_css_cors` is set to `true`, the editor will add a `crossorigin="anonymous"` attribute to the link tags that the StyleSheetLoader uses when loading the `content_css`. This allows you to host the `content_css` on a different server than the editor itself. **Type:** `Boolean` **Default value:** `false` **Possible values:** `true`, `false` #### Example: using `content_css_cors` ```js // File: http://domain.mine/mysite/index.html tinymce.init({ selector: 'textarea', // change this value according to your HTML content_css: 'http://www.somewhere.example/mycontent.css', content_css_cors: true }); ``` ### `content_style` This option allows custom CSS styles to be set as a string. The styles are injected into the `head` of the page containing the editable area. In TinyMCE’s classic mode, it is injected into the `head` of TinyMCE’s iframe. In inline mode, it is injected into the `head` of the page TinyMCE is rendered in. **Type:** `String` > **Note:** `content_style` styles are not saved within TinyMCE’s content. If they are needed for display purposes, ensure the styles are also included in the page the content will be displayed on. #### Example: applying one CSS style using `content_style` ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML content_style: 'div { margin: 10px; border: 5px solid red; padding: 3px; }' }); ``` To add two or more styles with this option, provide the styles as a single string. #### Example: applying two or more CSS styles using `content_style` ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML content_style: 'div { margin: 10px; border: 5px solid red; padding: 3px; } ' + '.blue { color: blue; } .red { color: red; }' }); ``` ## Add fonts to the editor ### `font_css` The `font_css` option loads the specified font CSS files into both the editable area and the webpage TinyMCE is rendered in. Font CSS files should only contain CSS for specifying custom fonts using the `@font-face` and related CSS rules. > **Note:** To allow users to apply the fonts added though `font_css`, update the fonts list using the [`font_family_formats` option](../user-formatting-options/#font_family_formats). **Type:** `String`, `Array` > **Note:** This option is intended for use with TinyMCE’s classic mode, as the editable area is sandboxed within an iframe. For inline mode editors, relevant font CSS files should be loaded as part of the webpage TinyMCE is rendered in, not using the `font_css` option. If a relative path is specified, it will be resolved in relation to the URL of the webpage TinyMCE is rendered in. #### Absolute path example ```js // File: http://domain.mine/mysite/index.html tinymce.init({ selector: 'textarea', // change this value according to your HTML font_css: '/myFont.css' // resolved to http://domain.mine/myFont.css }); ``` #### Relative path example ```js // File: http://domain.mine/mysite/index.html tinymce.init({ selector: 'textarea', // change this value according to your HTML font_css: 'myFont.css' // resolved to http://domain.mine/mysite/myFont.css }); ``` To load multiple font CSS files, provide the paths as either a array of strings or a comma-separated string. #### Using multiple stylesheets example ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML font_css: 'myFont.css,myFont2.css' // includes both font CSS files in header }); ``` #### Using multiple stylesheets as array example ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML font_css: [ 'myFont.css', 'myFont2.css' ] // includes both font CSS files in header, ability to have CSS with `,` in URL }); ``` ## Add attributes to the editor body ### `body_class` Use the `body_class` option to add a class to the body of each editor instance. This class can be used to override the styles added by the `content_css` option. The `body_class` will be removed if the editor is removed and will not be included in any content retrieved from the editor. **Type:** `String` #### Example: using `body_class` This will add the same class to all editors that gets created by the `init` call. ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML body_class: 'my_class' }); ``` This will set specific classes on the bodies of specific editors. ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML body_class: 'elm1=my_class, elm2=my_class' }); ``` ### `body_id` This option enables you to specify an id for the body of each editor instance. This id can then be used to do TinyMCE specific overrides in your `content_css`. **Type:** `String` #### Example: using `body_id` This will add the same id to all editors that gets created by the `init` call. ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML body_id: 'my_id' }); ``` This will set specific ids on the bodies of specific editors. ```js tinymce.init({ selector: 'textarea', // change this value according to your HTML body_id: 'elm1=my_id, elm2=my_id2' }); ``` ## Importing complex CSS The Import CSS plugin assists with importing complex CSS into the editor text area. For information on using the Import CSS plugin, see: [The Import CSS plugin](../importcss/).