Fix percyCSS for invalid DOM

Understand and address warnings related to Percy DOM Serialization for screenshot capture during the visual testing process.

Percy works by serializing the DOM and sending it to our infrastructure for capturing screenshots. The warning DOM elements found outside </body>, percyCSS might not work usually comes during the serialization of the DOM when there are elements positioned outside the </body> tag, leading to issues with the proper injection of percyCSS.

To address this issue, use the reshuffleInvalidTags: true (default is false) configuration. This attempts to reposition these elements inside the </body> tag.

This config option can be used globally in .percy.yml with the percy snapshotcommand, and at the per-snapshot level with both the percy snapshot command and the percySnapshot function.

Reference Topic

• Percy Common - FAQs