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Design a Responsive Sliding Login & Registration Form using HTML CSS & JavaScript

Last Updated : 23 Jul, 2025

In this article, we will see how to create the Responsive Sliding Login & Registration Form using HTMLCSS & JavaScript, along with understanding its implementation through the illustration.

Many websites, nowadays, implement sliding login & registration forms for their sites. A Registration form is used to register or create a new account for a new user for a website, and a login form is used to enter the details of a registered user into their particular account or portal. So, many websites implement these two approaches into two different pages. Enhance the user experience by providing smooth sliding animations when switching between login and registration forms. The integrated button at the top simplifies user selection. Perfect for websites seeking a streamlined and modern approach to user authentication.

Step-by-Step guide to design a Responsive Sliding Login and Registration form

  • Organize files with "index.html," "style.css," and "index.js" in a project folder, including a separate file for responsive CSS.
  • Create a header section for the title, followed by a container div holding login and signup forms with a form-changing button.
  • Add a slider div above buttons using CSS for smooth animation, adjusting its position based on button clicks.
  • Style form-changing buttons with CSS to center and disable border/outline, using flexbox properties.
  • Sliding forms below the button div, adjusting width and positioning with CSS, and utilizing JavaScript to toggle classes for smooth transitions.

Example: This example illustrates how to build a responsive sliding login & signup form using HTMLCSS & JavaScript.

Output

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