Mastery Points
0
Active Mission
Mission: Change the color property in the style tag to 'red' to witness the color override.
Objective: add color: red to the code
Current MissionIN PROGRESS
Riddle:Mission: Change the color property in the style tag to 'red' to witness the color override.
33%
Reward: 40 XP Verified
CSS Syntax & Cascade in html-css
Context & Logic
CSS applies styles via selectors. Colors and Units are the primary tokens.
Technical Reference
SelectorTargets the element (e.g., h1, .class).
PropertyThe attribute you change (e.g., color).
rem unitsRoot-based scaling (industry standard for accessibility).
hex colorsCompact 6-digit color codes.
hsl colorsHuman-friendly (Hue, Saturation, Lightness).
cascadeTop-to-bottom rule application logic.
Interactive Workshop
Interactive Playground
Source HTMLMarkup
Source CSSStyle
Live Output Pane
Sync activeTailwind Core Loaded
Standard CSS Scope
Auto-Sync Preview
Modify the source above to see live changes. Supports standard CSS and Tailwind utility classes.
Test Your Knowledge
Assessment Mode1What does 'rem' stand for in CSS units?