Best WordPress theme 21Design - WordPress site: ss21.jp

Last updated Oct 2026

Page title: 株式会社二十一設計｜横浜の設備設計事務所

Page description: 株式会社二十一設計は横浜の設備設計事務所です。機械設備、電気設備、情報通信設備を取り扱う専門の技術者が在籍しており、建築設備設計のす

Detected WordPress theme (1x)

21Design WordPress page theme by 21Design. 21Design

Detected WordPress plugins (7x)

4 494

Free

jQuery Colorbox

by Arne Franken

Check out the latest WordPress deals for your site. A Colorbox/Lightbox plugin for WordPress. jQuery Colorbox features 11 themes from which you can choose. See my...

2 411

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MediaElement.js – HTML5 Video & Audio Player

by John Dyer

Video and audio plugin for WordPress built on the MediaElement.js HTML5 media player library. Provides Flash or Silverlight fallback players for non-HTML5 browsers...

1 788 813

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Contact Form 7

by Takayuki Miyoshi

Contact Form 7 can manage multiple contact forms, plus you can customize the form and the mail contents flexibly with simple markup. The form supports Ajax-powered...

9 469

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Contact Form 7 add confirm

by Yuichiro ABE

“Contact Form 7 add confirm” can add confirm step to “Contact Form 7”. “Contact Form 7 add...

18 066

Free

Download Monitor

by WPChill

Download Monitor provides an interface for uploading and managing downloadable files (including support for multiple versions), inserting download links into posts...