Percy specific CSS fails if elements are present outside of <body> #489
Description
Problem
We apply Percy CSS to the bottom of the captured DOM. We use a regex to apply it below the last element in <body>:
cli/packages/core/src/utils.js
Lines 43 to 45 in ed522a5
If there are (invalid) elements outside of the <body> element, this breaks down. While there should never be elements outside of the <body>, we should protect the SDKs from failing in this manner.