What does Margin do in CSS?

In CSS, the Margin property is used to create space around elements outside of their border. When applied, it effectively clears space surrounding an element, distinguishing it from adjacent elements. This feature allows for better spacing and layout control on a webpage without impacting the dimensions of the element itself.

Using margin is valuable for achieving desired placement and alignment of elements in relation to one another. For instance, if you have multiple elements that you want to appear with consistent spacing between them, margin provides a straightforward way to accomplish that.

Focusing on why margin is the correct choice clarifies its primary function: it manages the external spacing, separating an element from others rather than modifying the content or inner padding.