CSS CSS Professional Development 2

Question 1

Which CSS methodology uses Block, Element, and Modifier naming to keep stylesheets maintainable?

Accepted Answer

BEM

Answer

BEM stands for Block, Element, Modifier and structures class names accordingly.

Question 2

What does the CSS `will-change` property primarily help with?

Accepted Answer

Hinting the browser to optimize upcoming animations

Answer

`will-change` tells the browser to prepare for a property change so it can optimize rendering.

Question 3

Which unit is relative to the font size of the root element?

Accepted Answer

rem

Answer

`rem` is relative to the root (html) element's font size.

Question 4

In a CSS preprocessor like Sass, what symbol denotes a variable?

Accepted Answer

$

Answer

Sass variables are declared with a leading dollar sign.

Question 5

Which CSS feature lets you define reusable custom properties directly in CSS without a preprocessor?

Accepted Answer

CSS variables (custom properties)

Answer

Native CSS custom properties (var()) provide reusable values without a preprocessor.

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