Unexpected margin collapse between Flexbox items in a grid layout using Bootstrap 5
I've spent hours debugging this and I'm writing unit tests and I'm encountering an issue with margin collapsing between Flexbox items in a grid layout when using Bootstrap 5... I have a grid with several rows of cards, and I expected the margins to be applied without any issues. Instead, it seems like the margins between adjacent Flexbox items are collapsing, resulting in unexpected spacing. Here’s a simplified version of my HTML structure: ```html <div class="row"> <div class="col-md-4"> <div class="card mb-4"> <div class="card-body"> Card 1 </div> </div> </div> <div class="col-md-4"> <div class="card mb-4"> <div class="card-body"> Card 2 </div> </div> </div> <div class="col-md-4"> <div class="card mb-4"> <div class="card-body"> Card 3 </div> </div> </div> </div> ``` I added the `mb-4` class to the cards to provide a bottom margin, but the vertical space between the cards isn’t what I expect. The cards seem to be touching each other directly at times, especially when the window size changes. I’ve double-checked the Bootstrap documentation and I’m using version 5.3.0. So far, I’ve tried adding a custom class to handle margins explicitly: ```css .custom-margin { margin-bottom: 1.5rem !important; } ``` And applied it like so: ```html <div class="card custom-margin"> ``` But it still doesn't prevent the margin collapse. I also explored using `display: flow-root;` on the parent container, but that didn't seem to help either. Is there a way to achieve the desired spacing without encountering margin collapsing issues? Any insights on how to properly manage margin behaviors in a Flexbox context would be greatly appreciated. The stack includes Html and several other technologies. Has anyone else encountered this? I'm using Html latest in this project. What would be the recommended way to handle this?