The display property in CSS determines how elements are displayed on the page. It's a key concept in layout design.

Common values include:

• block – Stacks elements vertically
• inline – Places elements in-line with surrounding text
• inline-block – Like inline, but allows width & height
• flex – One-dimensional layout
• grid – Two-dimensional layout
• none – Completely hides the element

Block elements take the full width and stack vertically. Default for <div>, <p>, etc.

Inline elements flow with surrounding text and do not start on a new line.

Inline-block combines inline flow with the ability to set width and height.

Flexbox is a powerful 1D layout system that arranges items in rows or columns with flexible sizing.

Elements with display: none are not rendered and take up no space.