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css

Curriculum Index

Current LevelInitiate
0/ 500 XP
Gravit Certificate:
100% Required
  • CSS Syntax, Selectors & Specificity
  • The CSS Box Model & box-sizing: border-box
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Selectors & Box Model•Lesson 2

border-box

Understanding the Box Model is the most critical foundation in CSS. In the default 'content-box', adding padding or borders expands the element beyond its defined width! Setting 'box-sizing: border-box' ensures padding and borders stay inside the allocated width, making sizing intuitive.

> **Key Takeaway:** Every HTML element is a box composed of Content, Padding, Border, and Margin.
Python 3.11
•
Interactive Challenge
+50 XP
Challenge Objective

Every HTML element is a box composed of Content, Padding, Border, and Margin.

solution.py
UTF-84 SpacesAuto-saved
cpython3.11:~/workspace
CPython 3.11.8 (WASM)
$python3 -u solution.py
Click "Compile & Run" (or press Ctrl + Enter) to compile AST, verify bytecode, and execute the solution.