--- title: "Modify your website theme" date: "2018-01-05T14:19:35+00:00" summary: "Enhance your website's theme with Site Studio integration. Learn how to add the cohesion-placeholder tag, modify your .info.yml file, and perform a crucial rebuild for seamless functionality." image: type: "page" url: "/drupal-starter-kits/add-ons/site-studio/modify-your-website-theme" id: "f2789d5b-0d2a-416a-ad3e-5d2e0d5831c4" --- To use Site Studio on your existing website: 1. Add the `cohesion-placeholder` tag to your custom theme. 2. Add `` and `` within the `` tag of the site's theme. Site Studio uses render placeholders of inline CSS. These placeholders cannot be injected into an HTML template. 3. Enable Site Studio on a custom theme by adding `cohesion: true` to the themes.info.yml file. 4. Perform Site Studio rebuild to create required templates. This step requires your theme to be installed.