In HTML, adding a transform to an element (or multiple elements) will usually result in a more isometric and flatter look. To enable true 3D perspective, one of the parent elements needs to have Children perspective enabled.
In this Micro Lesson, Grímur shows us how to enable Children perspective on a Section, turning it into a camera in which children elements can be manipulated in 3D space. Is it as powerful as time travel? No. But almost.