The CSS Box Model describes how every element on a page is a box made up of content, padding, border, and margin. Understanding it is essential for layout. Think of it like a framed photo—content is the photo, padding is the white space inside the frame, border is the frame, and margin is the gap between frames on the wall.
Active Recall
2 Flashcards
Interview Flashcards & Mock Mode
Practice with 3D flip cards, voice reader, and timed interview simulations.
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CodeShot.in — Daily Challenges
60-second in-browser coding micro-challenges to sharpen syntax and problem-solving speed.
What is the CSS Box Model?
What is the difference between box-sizing: content-box and border-box?
content-box (default) calculates width excluding padding and border, often causing layout surprises. border-box includes padding and border in the width, making sizing more predictable. Most modern projects use border-box globally.