List Referrers

Many of life's failures are people who did not realize how close they were to success when they gave up.
Thomas A. Edison

contain

The contain CSS property allows an author to indicate that an element and its contents are, as much as possible, independent of the rest of the document tree. This allows the browser to recalculate layout, style, paint, size, or any combination of them for a limited area of the DOM and not the entire page, leading to obvious performance benefits.
contain css reference