Title: Blocks CSS: CSS Editor for Gutenberg Blocks
Author: Hardeep Asrani
Published: <strong>2019年2月14日</strong>
Last modified: 2026年7月22日

---

プラグインを検索

![](https://ps.w.org/blocks-css/assets/banner-772x250.jpg?rev=2030330)

![](https://ps.w.org/blocks-css/assets/icon-256x256.jpg?rev=2030330)

# Blocks CSS: CSS Editor for Gutenberg Blocks

 作者: [Hardeep Asrani](https://profiles.wordpress.org/hardeepasrani/)

[ダウンロード](https://downloads.wordpress.org/plugin/blocks-css.3.2.1.zip)

 * [詳細](https://ja.wordpress.org/plugins/blocks-css/#description)
 * [レビュー](https://ja.wordpress.org/plugins/blocks-css/#reviews)
 * [開発](https://ja.wordpress.org/plugins/blocks-css/#developers)

 [サポート](https://wordpress.org/support/plugin/blocks-css/)

## 説明

Blocks CSS allows you add custom CSS to your Blocks straight from the Block Editor(
Gutenberg).

It adds a syntax-highlighted CSS Editor where you can add additional CSS to your
Gutenberg Blocks to style them the way you want.

All the code and sources for this plugin are publicly available as part of https://
github.com/Codeinwp/otter-blocks.

## スクリーンショット

[⌊CSS Editor⌉⌊CSS Editor⌉[

CSS Editor

[⌊CSS Editor⌉⌊CSS Editor⌉[

CSS Editor

## 評価

![](https://secure.gravatar.com/avatar/2e30329ab3220e0cf929fe14c6efe89bed6c64d148c584e805618d4425862c04?
s=60&d=retro&r=g)

### 󠀁[Indispensable!](https://wordpress.org/support/topic/indispensable-272/)󠁿

 [maltmann](https://profiles.wordpress.org/maltmann/) 2026年2月8日 1 reply

Works like a charm on any of my recent WP projects. [EDIT]I need to change my review.
On some setups, I get two CSS editors shown in the “Custom CSS” attribute panel,
and only contents of the second instance are getting saved.Problem:Two CodeMirror
editors are displayed in the Custom CSS panel of the Blocks CSS plugin instead of
one. Both editors are located in the same container. Assumed Root Cause:WordPress
enables React StrictMode by default in the Block Editor. React StrictMode runs useEffect
hooks twice to detect potential side effects. Analysis:The Blocks CSS plugin initializes
CodeMirror in a useEffect hook.Since this useEffect doesn’t have a cleanup function
that checks whether CodeMirror is already initialized, wp.CodeMirror() is called
again on every mount cycle. With StrictMode enabled, this means: twice on the same
DOM element. Probable Solution:The useEffect hook should implement a cleanup function
that prevents CodeMirror from being initialized multiple times on the same element.
Side Notes:This only happens in some of my setups. I couldn’t figure out any possibly
conflicting theme, plugin or code snippet. So I assume it might be something like
a timing issue. Conclusion:I won’t change the 5-star rating, because despite of 
this problem the plugin does its job. And I know how to handle this issue by a simple
CSS rule to hide all Block CSS CodeMirrors except the last one:#o-css-editor .CodeMirror:
not(:last-child) { display: none;}

![](https://secure.gravatar.com/avatar/6cbd96106c76dfd85e755f1aba9c463817d1b9d5dd74bb64b84dad2b458a790c?
s=60&d=retro&r=g)

### 󠀁[Отличный плагин](https://wordpress.org/support/topic/%d0%be%d1%82%d0%bb%d0%b8%d1%87%d0%bd%d1%8b%d0%b9-%d0%bf%d0%bb%d0%b0%d0%b3%d0%b8%d0%bd-991/)󠁿

 [Сергей](https://profiles.wordpress.org/serzh82/) 2025年11月20日 1 reply

Отличный плагин

![](https://secure.gravatar.com/avatar/ff57a8df8c1ffea97f5c0992bed6943b19a831dbc8b3a0f9153dc4421fa1c4cc?
s=60&d=retro&r=g)

### 󠀁[Моя оценка: пять звезд](https://wordpress.org/support/topic/%d0%bc%d0%be%d1%8f-%d0%be%d1%86%d0%b5%d0%bd%d0%ba%d0%b0-%d0%bf%d1%8f%d1%82%d1%8c-%d0%b7%d0%b2%d0%b5%d0%b7%d0%b4/)󠁿

 [shooter604](https://profiles.wordpress.org/shooter604/) 2025年11月14日 1 reply

Очень классные возможности! Пользуюсь постоянно!

![](https://secure.gravatar.com/avatar/5a04f5d680efd2cb46cc23d68d1e4d7c94f7e4e910dd0b60c54ebd63861e1785?
s=60&d=retro&r=g)

### 󠀁[The Other Review Titles Say It All](https://wordpress.org/support/topic/the-other-review-titles-say-it-all/)󠁿

 [someguy42](https://profiles.wordpress.org/someguy42/) 2024年7月24日 1 reply

“Essential, Useful Tool, Completes the Block Editor, Should be part of the core,”
The one thing they don’t mention is how quick and genuinely concerned the support
is.

![](https://secure.gravatar.com/avatar/fc490c401adf61289262192824d444a5f47939eb723b3ccc8ce7c73065cb7c0f?
s=60&d=retro&r=g)

### 󠀁[Simple and great plugin!](https://wordpress.org/support/topic/simple-and-great-plugin-36/)󠁿

 [Andreslav](https://profiles.wordpress.org/andreslav/) 2023年10月4日 1 reply

Does exactly what I need it to do.

![](https://secure.gravatar.com/avatar/947be7e3fe72d711a506739fa280376b9985c11cc9005f1b6ae2eedece99d515?
s=60&d=retro&r=g)

### 󠀁[Completes Block Editor](https://wordpress.org/support/topic/completes-block-editor/)󠁿

 [Masud Rana](https://profiles.wordpress.org/yeelloo/) 2023年9月26日 1 reply

Can’t think of Block Editor without this. Tiny powerful thing. Only thing I hate
in this plugin is the following line: $render_css = empty( $file_name ) || strpos(
$file_name, ‘post-v2’ ) === false; This means if you deactivate Otter, your content
might just break 🙁

 [ 25件のレビューをすべて表示 ](https://wordpress.org/support/plugin/blocks-css/reviews/)

## 貢献者と開発者

Blocks CSS: CSS Editor for Gutenberg Blocks はオープンソースソフトウェアです。以下
の人々がこのプラグインに貢献しています。

貢献者

 *   [ Hardeep Asrani ](https://profiles.wordpress.org/hardeepasrani/)
 *   [ Themeisle ](https://profiles.wordpress.org/themeisle/)

“Blocks CSS: CSS Editor for Gutenberg Blocks” は10ロケールに翻訳されています。 [翻訳者](https://translate.wordpress.org/projects/wp-plugins/blocks-css/contributors)
のみなさん、翻訳へのご協力ありがとうございます。

[“Blocks CSS: CSS Editor for Gutenberg Blocks” をあなたの言語に翻訳しましょう。](https://translate.wordpress.org/projects/wp-plugins/blocks-css)

### 開発に興味がありますか ?

[コードを閲覧](https://plugins.trac.wordpress.org/browser/blocks-css/)するか、[SVN リポジトリ](https://plugins.svn.wordpress.org/blocks-css/)
をチェックするか、[開発ログ](https://plugins.trac.wordpress.org/log/blocks-css/)
を [RSS](https://plugins.trac.wordpress.org/log/blocks-css/?limit=100&mode=stop_on_copy&format=rss)
で購読してみてください。

## 変更履歴

You can check the changelog [here.](https://github.com/Codeinwp/otter-blocks/blob/master/CHANGELOG.md)

## メタ

 *  バージョン **3.2.1**
 *  最終更新日 **2週間前**
 *  有効インストール数 **5,000+**
 *  WordPress バージョン ** 6.6またはそれ以降 **
 *  検証済み最新バージョン: **7.0.3**
 *  PHP バージョン ** 5.4またはそれ以降 **
 *  言語
 * [Chinese (Taiwan)](https://tw.wordpress.org/plugins/blocks-css/)、[Dutch](https://nl.wordpress.org/plugins/blocks-css/)、
   [Dutch (Belgium)](https://nl-be.wordpress.org/plugins/blocks-css/)、[English (US)](https://wordpress.org/plugins/blocks-css/)、
   [French (Canada)](https://fr-ca.wordpress.org/plugins/blocks-css/)、[German](https://de.wordpress.org/plugins/blocks-css/)、
   [German (Switzerland)](https://de-ch.wordpress.org/plugins/blocks-css/)、[Hebrew](https://he.wordpress.org/plugins/blocks-css/)、
   [Russian](https://ru.wordpress.org/plugins/blocks-css/)、[Spanish (Spain)](https://es.wordpress.org/plugins/blocks-css/)、
   [Swedish](https://sv.wordpress.org/plugins/blocks-css/).
 *  [プラグインを翻訳](https://translate.wordpress.org/projects/wp-plugins/blocks-css)
 * タグ
 * [block-editor](https://ja.wordpress.org/plugins/tags/block-editor/)[css editor](https://ja.wordpress.org/plugins/tags/css-editor/)
   [custom css](https://ja.wordpress.org/plugins/tags/custom-css/)[design](https://ja.wordpress.org/plugins/tags/design/)
   [gutenberg](https://ja.wordpress.org/plugins/tags/gutenberg/)
 *  [詳細を表示](https://ja.wordpress.org/plugins/blocks-css/advanced/)

## 評価

 5つ星中4.9つ星

 *  [  23 5-星レビュー     ](https://wordpress.org/support/plugin/blocks-css/reviews/?filter=5)
 *  [  1 4-星レビュー     ](https://wordpress.org/support/plugin/blocks-css/reviews/?filter=4)
 *  [  1 3-星レビュー     ](https://wordpress.org/support/plugin/blocks-css/reviews/?filter=3)
 *  [  0 2-星レビュー     ](https://wordpress.org/support/plugin/blocks-css/reviews/?filter=2)
 *  [  0 1-星レビュー     ](https://wordpress.org/support/plugin/blocks-css/reviews/?filter=1)

[Your review](https://wordpress.org/support/plugin/blocks-css/reviews/#new-post)

[すべてのレビューを見る](https://wordpress.org/support/plugin/blocks-css/reviews/)

## 貢献者

 *   [ Hardeep Asrani ](https://profiles.wordpress.org/hardeepasrani/)
 *   [ Themeisle ](https://profiles.wordpress.org/themeisle/)

## サポート

過去2ヶ月以内に解決した問題:

     1 / 1

 [サポートフォーラムを表示](https://wordpress.org/support/plugin/blocks-css/)