There is a qualitative and quantitative difference between a day that begins with a little exercise, a book, meditation, a good meal, a thoughtful walk, and the start of a day that begins with a smartphone in bed.
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content-visibility

The content-visibility CSS property controls whether or not an element renders its contents at all, along with forcing a strong set of containments, allowing user agents to potentially omit large swathes of layout and rendering work until it becomes needed. Basically it enables the user agent to skip an element's rendering work (including layout and painting) until it is needed — which makes the initial page load much faster.
content-visibility css reference