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Frontend Mentor – Interactive card details form solution

This is a solution to the Interactive card details form challenge on Frontend Mentor. Frontend Mentor challenges help you improve your coding skills by building realistic projects.

Solution . Live Page


The challenge

Users should be able to:

  • Fill in the form and see the card details update in real-time
  • Receive error messages when the form is submitted if:
    • Any input field is empty
    • The card number, expiry date, or CVC fields are in the wrong format
  • View the optimal layout depending on their device’s screen size
  • See hover, active, and focus states for interactive elements on the page

Expected behaviour

  • Update the details on the card as the user fills in the fields
  • Validate the form fields when the form is submitted
  • If there are no errors, display the completed state
  • Reset the form when the user clicks “Continue” on the completed state


Mobile solution Tablet solution Desktop solution


My process

Built with

  • Semantic HTML5 markup
  • CSS custom properties
  • Flexbox
  • CSS Grid
  • Mobile-first workflow
  • React – JS library
  • Next.js – React framework
  • Styled Components – For styles

What I learned

This challenge was a great learning opportunity, it was also very useful to reinforce previous knowledge, and face problems that had not been presented to me before.



View Github