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HTML and CSS fundamentals: structure, presentation and diagnosis

Learn HTML and CSS through structure, forms, cascade, responsive layout and diagnosis. Original single- and multiple-choice questions and cases, without code execution.

BigSavantAvailable10 lessons740 estimated study minutes
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BigSavant10 lessons
YOUR LEARNING PLAN

Modules and lessons

Open a lesson to begin. Follow the sequence or revisit any concept.

0 / 10
01

Document structure and semantics

Organize HTML according to content function, declare metadata and language, and diagnose differences between templates and the parsed tree. Separate meaning, identity and presentation.

65 min
Open lesson02

Links, images and content meaning

Build links and images whose meaning survives presentation changes. Resolve relative paths, distinguish text alternatives and retain header relationships in a simple table.

65 min
Open lesson03

Forms, controls and submission

Interpret control association, submitted pairs and the influence of the chosen button. Distinguish identity, name, state and form ownership.

65 min
Open lesson04

Constraints, feedback and accessibility

Interpret native constraints and the limits of each validation path. Communicate usable errors while retaining server checks.

65 min
Open lesson05

Cascade, inheritance and selector contracts

Determine which declaration supplies a value and distinguish matching, precedence, inheritance and invalidity after substitution.

65 min
Open lesson06

Box model, flow and overflow

Calculate dimensions, locate positioning references and distinguish containment, clipping and scrolling. Explain margin and flow effects without attributing every problem to width.

65 min
Open lesson07

Flexbox and Grid layout

Organize components by axes and tracks, calculate available space and diagnose minimums and visual reordering.

65 min
Open lesson08

Responsive design and media queries

Adapt content to available width, interpret media queries and align image hints with layout. Preserve zoom, reading and access to actions.

65 min
Open lesson09

Focus, states, motion and user preferences

Keep interaction states identifiable and adapt presentation to user preferences. Distinguish appearance, focus and functional behavior.

65 min
Open lesson10

Diagnosing styles and delivery

Distinguish resource delivery, parsing, relevance, cascade and final values. Diagnose publishing changes without hiding their cause behind overrides.

65 min
Open lesson
UNDERSTAND THE PATH

Objectives and progression

Learn HTML and CSS through structure, forms, cascade, responsive layout and diagnosis. Original single- and multiple-choice questions and cases, without code execution.

Audience

People starting web development and professionals who need to interpret interfaces, review content and diagnose presentation problems.

Prerequisites

Basic browser use and reading short excerpts. No framework knowledge, tool installation or code execution is required to answer assessments.

What you will learn

  • Structure content and interpret form controls.
  • Resolve cascade, inheritance and sizing under explicit assumptions.
  • Interpret responsive layout, focus and user preferences.
  • Distinguish resource delivery, parsing and style application.

What is available

10 lessons · 100 regular questions · 20 cases

Internal final assessment: 40 exercises in 90 minutes. Full mock exams are not yet available.

Assessments and mock exams reuse path exercises. They do not award certifications or guarantee passing an external exam.

Scope, review and limitations

Ten lessons with 100 regular questions and 20 original cases. Learn to interpret documents, links, images and forms, resolve the cascade, calculate boxes, organize Flexbox and Grid, and diagnose states and style delivery. The baseline is the HTML Living Standard and CSS modules documented in each topic’s sources, without assuming a single CSS version. Every assessment uses single or multiple choice, including excerpts and scenarios, without running code. The final assessment reuses 40 items in 90 minutes. JavaScript, TypeScript and frameworks have separate paths.

Internal 40-question assessment in 90 minutes, reusing course items, with single or multiple choice and no code execution. It is not an official exam, awards no external certification and does not certify a site’s accessibility.

Independent education and assessment with original questions and scenarios. No affiliation, authorization, sponsorship or endorsement by WHATWG, W3C or Mozilla, and no official certification award. Names identify technologies and sources; trademarks belong to their respective owners. Examples do not certify accessibility conformance or full cross-browser compatibility.

CONTEXT AND TRANSPARENCY

References and version

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Path content version

HTML Living Standard; modular CSS

Content reviewed on 14 Oct 2026

Learning sources

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Independent preparation. Check the objectives, available content and coverage limits when planning your study.

Independent education and assessment with original questions and scenarios. No affiliation, authorization, sponsorship or endorsement by WHATWG, W3C or Mozilla, and no official certification award. Names identify technologies and sources; trademarks belong to their respective owners. Examples do not certify accessibility conformance or full cross-browser compatibility.

Independent HTML and CSS path, without affiliation, authorization, sponsorship or endorsement by WHATWG, W3C or Mozilla. Names identify technologies and sources; trademarks belong to their respective owners. No official certification or declaration of accessibility conformance.