Technique family

HTML & CSS

Messages stored in comments, attributes, stylesheets, and rendering differences.

How this family works

HTML and CSS separate structure from presentation. These challenges reward comparing source, DOM, styles, and the rendered page.

Challenges

CASE 003 Beginner

The Comment Knows

The browser renders one view; the source contains another.

HTML Comment 100 pts
CASE 005 Intermediate

White Room

A CSS rendering choice conceals text that remains in the document.

CSS Visibility 200 pts
CASE 006 Intermediate

Attribute Echo

The message lives in an HTML attribute rather than the visible text.

DOM Attribute 200 pts
CASE 008 Advanced

Stylesheet 404

The clue moved out of HTML and into the stylesheet.

CSS Source 300 pts