Build a Responsive Static Landing Page with Client‑Side Form Validation

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Computer Science

Build a Responsive Static Landing Page with Client‑Side Form Validation

HTML5CSS3Vanilla JavaScript (ES6)

Build a Responsive Static Landing Page with Client‑Side Form Validation

A hands‑on, project‑driven course that takes you from your existing HTML/CSS knowledge to a complete, deployable static site featuring a polished contact form that validates input in the browser.

4 modules12 lessonsComputer ScienceHTML5CSS3Vanilla JavaScript (ES6)Git (CLI)GitHub Pages (static hosting)

What you learn by building this

  • Create a complete static website from wireframe to live deployment
  • Apply responsive design using Flexbox and Grid
  • Implement client‑side form validation without any backend
  • Ensure accessibility best practices for form interaction

Learning Journey

1

Project Foundations

3 lessons

Define the site purpose, plan layout, and create the initial HTML skeleton.

2

Styling the Landing Page

3 lessons

Turn the raw markup into a polished, responsive design using modern CSS.

3

Interactive Form Validation

3 lessons

Add vanilla JavaScript to validate user input in the browser and give immediate feedback.

4

Polish, Test, and Deploy

3 lessons

Finalize accessibility, optimise assets, and publish the site for free.

Public lesson

Define goals & sketch wireframe

Lesson: Give the Landing Page a Clear Shape

Your React app is ready for a plan before you build more components. Today, you’ll decide what the landing page should help a visitor do and sketch the page’s structure.

Tasks

1. Write the page goal

First, name the visitor and the one action you want them to take. Keep the goal focused on the visitor, not on the technology.

Use this sentence frame:

This landing page helps [type of visitor] understand [main value or problem] and [one action you want them to take].

Write your own version:

This landing page helps __________________ understand __________________ and __________________.

Tasks

Check

Your sentence is ready when it:

  • names a specific visitor,
  • describes one clear benefit,
  • asks for one main action.

Tasks

If you have listed several actions, choose the most important one for now. Other actions can wait.

Tasks

2. Choose the page sections

List the sections your goal requires. Start with no more than five.

For each section, write what it should accomplish:

SectionWhat the visitor should learn or do
____________________________________
____________________________________
____________________________________
____________________________________
____________________________________

A useful landing page often has a beginning that explains the value, a middle that builds understanding or trust, and an ending that gives the visitor a next step. Use only the sections your project actually needs.

Tasks

Check

Read your goal again. You should be able to point to a section that supports the main action. Remove any section that does not help the visitor reach that action.

3. Sketch the wireframe

Draw boxes on paper or in a drawing tool. Do not worry about colors, fonts, images, or exact spacing yet. Label each box with its content or purpose.

Use this structure as a starting point, replacing the labels with your own:

┌─────────────────────────────────────┐
│ Header: [brand] [navigation]        │
├─────────────────────────────────────┤
│ Hero:                                │
│ [main message]                      │
│ [short explanation]                 │
│ [primary action]                    │
├─────────────────────────────────────┤
│ [section name]                       │
│ [what this section shows]           │
├─────────────────────────────────────┤
│ [section name]                       │
│ [what this section shows]           │
├─────────────────────────────────────┤
│ Final action: [                    ] │
├─────────────────────────────────────┤
│ Footer: [                          ] │
└─────────────────────────────────────┘

Tasks

Your sketch can be rough. Use rectangles, arrows, and words. If a section contains cards, show three small boxes rather than designing the cards.

Tasks

Check

Trace the visitor’s path from top to bottom:

  1. What do they understand first?
  2. What makes the page’s value clearer?
  3. Where do they take the main action?

Tasks

If the main action appears in several places, mark one as the primary action and make the others secondary or remove them.

Tasks

4. Compare the sketch with your current app

Look at the landing page you already have, if one exists. Write two short notes:

  • Keep: __________________________________________
  • Change: _________________________________________

Then mark your wireframe with one ★ beside the section you expect to build first. Choose a section small enough to render and inspect on its own, such as the header or hero.

Tasks

Finished check

You have completed this lesson when you have:

  • one focused goal statement,
  • a list of up to five sections,
  • a labeled low-fidelity wireframe,
  • one clearly marked first section to build,
  • one “Keep” note and one “Change” note about the current page.

Course Outline

4 modules · 12 lessons

Project Foundations

Styling the Landing Page

Interactive Form Validation

Polish, Test, and Deploy

Learn by building your own version.

Remix this public project to open the workspace, follow the guided build, and let the AI mentor teach you through the work instead of doing it for you.