This repository is dedicated to consult from vertocode.
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I post materials about this repository on my blog in the CSS section.
The flex layout allows responsive elements within a container to be automatically arranged depending on viewport.
A grid is a collection of horizontal and vertical lines creating a pattern against which we can line up our design elements.
We were able to use these characters in selectors to filter which ones we want to be modifying in CSS or testing in some testing framework like Cypress or Playwright.