CSS Box Model Visualizer

Interactive Box Model • Padding • Margin • Border • Live Dimensions

100%
Margin: 20px
Border: 5px
Padding: 20px
200 × 100
200Content Width
240Padding Box
250Border Box
290Total Width
CSS Code
.box-model-element {
  width: 200px;
  height: 100px;
  padding: 20px;
  margin: 20px;
  border: 5px solid #fbbf24;
  border-radius: 0px;
  background: #6366f1;
  box-sizing: border-box;
}
Content
Padding
Border
Margin

Quick Presets

Frequently Asked Questions

Common questions about CSS Box Model

01

What is CSS Box Model?

02

What's the difference between padding and margin?

03

What is box-sizing: border-box?

04

What is box-sizing: content-box?

05

How do I calculate total width?

06

Why is Box Model important?