[HelloNurse]

Given the abundance of div elements in modern HTML, a CSS rule to set padding in all of them can only make sense in an unlikely minority of abnormally simple and constrained pages. Setting a huge, fixed 15em padding is also highly suspect.

You need to "fight" only in poorly designed systems; UI elements can pretend to have a hierarchical namespace and avoid all interference with other components, and pages can be designed systematically (e.g. box-sizing border-box vs. content-box, padding vs. margin, flex...) to simplify CSS rules.

div.arbitrary-ui-library-prefix-radio-button-group { padding:0.5em; border: 0.1em dotted rgba(0,0,0,0.3); }

div.arbitrary-ui-library-prefix-huge-padded-box-container { padding:15em; }

[d0100]

> You need to "fight" only in poorly designed systems;

So pretty much most systems, especially general web Dev and frameworks