How to Build a Responsive Coming Soon Page Using HTML, CSS & JavaScript

Introduction

A "Coming Soon" page might seem simple, but when done right, it can build excitement, gather leads, and show professionalism  all while your main site is still in development. In this tutorial, you?ll learn how to create a clean, responsive, and interactive coming soon page using just HTML, CSS, and JavaScript , perfect for startups.

What You'll Build

• A full-screen animated background
• A countdown timer to launch
• A responsive layout for mobile and desktop
• A Mailchimp-integrated email subscription form
• Clean, scalable code you can adapt for your projects

Tools & Skills Needed

• Basic HTML & CSS
• Beginner-level JavaScript
• Text editor (VS Code recommended)
• Web browser

Step 1: Set up your HTML structure

html

• !DOCTYPE html
• html lang="en"
• head
•   meta charset="UTF-8"
•   meta name="viewport" content="width=device-width, initial-scale=1.0"
•   titleComing Soon - iGateHub/title
•   link rel="stylesheet" href="style.css"
• /head
• body
•   div class="container"
•     h1iGateHub/h1
•     pWe?re launching soon. Stay tuned!/p
•     div id="countdown"/div
•     form id="subscribe-form"
•       input type="email" placeholder="Enter your email" required
•       button type="submit"Notify Me/button
•     /form
•   /div
•   script src="script.js"/script
• /body
• /html
• 
  

Step 2: Style with CSS

• /* style.css */
• body {
•   margin: 0;
•   font-family: 'Segoe UI', sans-serif;
•   display: flex;
•   justify-content: center;
•   align-items: center;
•   background: #0f172a;
•   color: white;
•   height: 100vh;
•   text-align: center;
• }
• .container {
•   max-width: 500px;
• }
• input, button {
•   padding: 10px;
•   margin-top: 15px;
• }

Step 3: Add a Countdown with JavaScript

javascript

// script.js

• const countdown = document.getElementById('countdown');
• const launchDate = new Date("July 1, 2025 00:00:00").getTime();
• 
  
• const timer = setInterval(() = {
•   const now = new Date().getTime();
•   const diff = launchDate - now;
• 
  
•   if (diff = 0) {
•     clearInterval(timer);
•     countdown.innerHTML = "We're Live!";
•   } else {
•     const days = Math.floor(diff / (1000 * 60 * 60 * 24));
•     const hours = Math.floor((diff / (1000 * 60 * 60)) % 24);
•     const minutes = Math.floor((diff / (1000 * 60)) % 60);
•     const seconds = Math.floor((diff / 1000) % 60);
• 
  
•     countdown.innerHTML = `${days}d ${hours}h ${minutes}m ${seconds}s`;
•   }
• }, 1000);

Final Tips

Customize the fonts, colors, or add your logo for brand consistency

Hook your form to a Mailchimp endpoint to capture leads

Add social media icons for more engagement

Wrap-Up

You?ve just built a polished coming soon page that can be deployed on any web server or hosting platform. Pages like this help you start marketing before launch and create an impression of readiness and professionalism ? just like we do here at igatehub.

Want More?

Stay tuned for our next tutorial: ?Integrating ChatGPT with Your Website Using JavaScript.?

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