How to use display, width, and height in CSS

What to know about display, width, and height in CSS

The display property controls how an element participates in layout. Block, inline, flex, and grid each solve different problems. This chapter explains the concept, demonstrates a practical example, and gives you a guided exercise.

How to use display, width, and height in CSS

Write a rule with a clear selector and declarations, then inspect the cascade in browser developer tools. Prefer reusable classes, responsive units, and visible focus styles.

Example: display, width, and height in CSS

Use this example as a starting point. Identify the part that controls the result, then adapt it to your own page or project.

.nav-item { display: inline-block; width: 120px; }

Common questions about display, width, and height

When should I use display, width, and height?

Use this technique when it expresses the structure, styling, or behavior your page needs. Keep the implementation focused and test it with the surrounding content.

What should I practice next?

Style a responsive card with readable type, consistent spacing, a clear focus state, and a layout that adapts to a narrow screen.