Some articles of css tricksSingle Element Loaders: The Dots
https://css-tricks.com/single-element-loaders-the-dots/
Conditionally Styling Selected Elements in a Grid Container
https://css-tricks.com/conditionally-styling-selected-elements-in-a-grid-container/
break-before
https://css-tricks.com/almanac/properties/b/break-before/
break-after
https://css-tricks.com/almanac/properties/b/break-after/
Single Element Loaders: The Spinner
https://css-tricks.com/single-element-loaders-the-spinner/
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#css