Unexpected margin collapse guide with last-child selector in a grid layout using CSS Grid
I can't seem to get I'm working with a question with margin collapsing when using the `:last-child` selector in a CSS Grid layout. I have a grid container with several grid items, and I want to apply a bottom margin only to the last item, but it appears that the margin is collapsing into the grid container, resulting in no spacing below the last item. Here's a simplified version of my code: ```html <div class="grid-container"> <div class="grid-item">Item 1</div> <div class="grid-item">Item 2</div> <div class="grid-item">Item 3</div> <div class="grid-item last">Item 4</div> </div> ``` ```css div.grid-container { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; } div.grid-item { background-color: lightgray; padding: 20px; } div.grid-item.last { margin-bottom: 20px; } ``` When I inspect the elements, the margin on the last item seems to be ignored, and the bottom of the grid container has no space below it. I've tried adding `overflow: auto;` to the grid container, but it didn't help. I also understand that margin collapsing can occur in certain situations, but I thought the `:last-child` specificity would prevent this scenario. I'm using Chrome Version 95.0.4638.54 for testing. Any insights or suggestions on how to resolve this margin scenario would be greatly appreciated! This is part of a larger application I'm building. I'd really appreciate any guidance on this. I'm on Ubuntu 22.04 using the latest version of Html/Css.