How to create Expanding Cards using HTML, CSS and Javascript ? Last Updated : 18 Apr, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report Creating expanding cards using HTML, CSS, and JavaScript involves creating a set of cards that expand when clicked.ApproachSelection of Sections:The code starts by selecting all HTML elements with the class 'section' using the document.querySelectorAll('.section') method.This creates a NodeList containing all elements with the specified class.Event Listener for Each Section:A forEach the loop is used to iterate over each section in the NodeList (sections).For each section, an event listener for the 'click' event is added.Removing 'active' Class from Other Sections:Inside the click event handler, another forEach the loop is used to iterate over all sections (sections).For each section in this loop, the 'active' class is removed using section.classList.remove('active').Adding 'active' Class to the Clicked Section:After removing the 'active' class from all sections, the 'active' class is added to the currently clicked section using section.classList.add('active').Example: We are following the above-explained approach. HTML <!DOCTYPE html> <html lang="en"> <head> <style> .container{ display: flex; width: 80%; } .one{ background: url(img/one.jpg); } .two{ background: url(img/two.jpg); } .three{ background: url(img/three.jpg); } .four{ background: url(img/four.jpg); } .section{ background-size: cover; background-position: center; background-repeat: no-repeat; height: 80vh; cursor: pointer; flex: 0.2; margin:8px; position: relative; transition: all 0.7s ease-out; } .section.active{ flex: 3; } </style> </head> <body> <!-- Container --> <div class="container"> <!-- Div with section and active --> <div class="section one active"></div> <!-- All another div with section --> <div class="section two"></div> <div class="section three"></div> <div class="section four"></div> </div> <script> const sections = document.querySelectorAll('.section') sections.forEach((section)=>{ section.addEventListener('click',()=>{ sections.forEach((section) => { section.classList.remove('active') }) section.classList.add('active') }) }) </script> </body> </html> Output Comment More infoAdvertise with us Next Article Design a Responsive Sliding Login & Registration Form using HTML CSS & JavaScript N NANDINIJAIN Follow Improve Article Tags : JavaScript Web Technologies HTML CSS JavaScript-Questions +1 More Similar Reads JS Projects: User Interface ComponentsPrice Range Slider with Min-Max Input using HTML CSS and JavaScriptIn this article, we are going to implement Price Range Slider using HTML, CSS, & JavaScript. 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