General rule to calculate padding

1. How do you calculate width and padding in CSS?
2. Why is padding important in design?

How do you calculate width and padding in CSS?

The width and height properties include the content, but does not include the padding, border, or margin. For example, .box width: 350px; border: 10px solid black; renders a box that is 370px wide. Here, the dimensions of the element are calculated as: width = width of the content, and height = height of the content.

Why is padding important in design?

Add space between borders and content.

Using padding to add space between content and its corresponding border is one way to ensure the design aligns with other on-page elements. Doing so can help you increase the whitespace of your graphic or website, which is fundamental in web design.