Can you identify the distinction?
What is the most effective approach to tackle this issue?
let stylesheets = document.styleSheets[0];
stylesheets.addRule('div::before','content:"text before";');
stylesheets.addRule('#some','color:red;font-size:14px;'); //insertRule FIREFOX
var some = document.getElementById('some');
some.style.color='red';
some.style.fontSize='14px';
some.setAttribute('style','color:red;font-size:14px;');
The analogy here is similar to choosing between storing styles in a CSS file or within a <style> block, versus using the style= attribute directly on an HTML element. When adding a rule, the style is applied to all elements that match the selector. However, setting the .style of an element specifically changes the style of that individual element, thus overriding any inherited styles from CSS (unless they have !important modifiers).
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