What is the process for browsers to locate and display CSS styles?

Imagine a scenario where we have a webpage with some basic HTML and CSS as shown below. Is the browser processing the styles for classes .b and .c even if they are not applied to any elements in the HTML?

HTML

<div class="a">1</div>
<div>2</div>
<div>3</div>

CSS

.a { color: aqua; }
.b { color: blue; }
.c { color: cyan; }

This is just a simplified example, but in reality, many projects may include large amounts of unused CSS code, such as incorporating Bootstrap for a very small project.

htmlcssperformancebrowser

Answer №1

Absolutely, all the guidelines are stored in memory, which explains why any new elements added to your DOM (for example, through JavaScript) immediately inherit the existing styles.

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