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CSS not applying styles to dynamically added elements using jQuery

👀 Views: 470 💬 Answers: 1 📅 Created: 2025-06-15
css jquery bootstrap HTML/CSS/JavaScript

Quick question that's been bugging me - I'm reviewing some code and I'm working on a project and hit a roadblock....... I'm working with an scenario where CSS styles do not apply to elements added dynamically via jQuery. I'm using jQuery 3.6.0 and Bootstrap 5.1.3. I have a button that, when clicked, adds a new `<div>` to a container. However, the new div does not inherit the CSS styles defined for similar existing divs. Here's the relevant code: ```html <div class="container"> <div class="box">Box 1</div> <div class="box">Box 2</div> </div> <button id="addBox">Add Box</button> ``` ```css .box { width: 100px; height: 100px; background-color: blue; margin: 10px; } ``` ```javascript $('#addBox').on('click', function() { $('.container').append('<div class="box">New Box</div>'); }); ``` After clicking the button, the new box appears, but it doesn't have the blue background or any of the margin applied to it. It shows up as an empty div. I’ve checked if the CSS file is properly linked, and it is. The class is applied, but it's as if the styles are not being recognized. I've tried adding a delay in the jQuery code with `setTimeout`, but that didn’t change anything. I also inspected the element in the browser's developer tools and confirmed that the class `box` is indeed present on the new div, but it seems like it's being overridden or ignored somehow. Is there a specific reason why this might be happening or a best practice I’m missing here? My development environment is macOS. For context: I'm using Html/Css/Javascript on Ubuntu. I'm using Html/Css/Javascript stable in this project. Am I approaching this the right way? This is for a microservice running on macOS. Thanks in advance! The stack includes Html/Css/Javascript and several other technologies. My team is using Html/Css/Javascript for this microservice. Any ideas how to fix this?