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Solving Overflowing Div Issues with align-items: safe center in CSS

12/21/2024

Ayush Shah

Aligning items in CSS can sometimes be tricky, especially when dealing with overflowing content. One common issue developers face is ensuring that flex or grid items are aligned properly while also handling overflow scenarios gracefully. In this blog, we'll dive into the align-items: safe center property and explore how it can help solve issues related to overflowing divs.

Common Alignment Issues in CSS

When working with layouts in CSS, especially using Flexbox or Grid, you might encounter a few common issues:

  • Align Items Issue CSS: Whether you're trying to center content or align it to the start or end, sometimes items don't align as expected.
  • Align-items: center not working: This issue can arise when the container's height isn't defined or when there's overflowing content that pushes items out of view.
  • Align items issue HTML: Even the structure of your HTML can affect alignment, especially with nested elements.


Understanding align-items: safe center

The align-items property in CSS is used to align items along the cross axis in Flexbox or along the block axis in Grid. The safe keyword, when combined with alignment values like center, ensures that content won't be clipped or lost due to overflow.

Syntax Example:

.container {
  display: flex; /* or display: grid; */
  align-items: safe center;
}

In this example, align-items: safe center aligns the items in the center along the cross axis. However, if the content overflows and could potentially be clipped or cause other issues, the safe keyword ensures that it is instead aligned to the start.

Common Use Cases and Solutions

1. Can't Scroll to Top of Flex Item that is Overflowing Container

Imagine a scenario where a flex item overflows its container, making it impossible for users to scroll to the top of the content. By using align-items: safe center, you can prevent this issue:

.container {
  display: flex;
  overflow-y: auto;
  height: 100vh; /* Full height of the viewport */
  align-items: safe center;
}

.item {
  min-height: 120%;
}

In this setup, even if .item overflows the .container, users can still scroll to the top without the content being clipped.

2. Flex Items Inside Overflow Container Display Issue

Another common issue is when flex items inside an overflow container don't align properly or get cut off. The safe keyword helps in such cases by preventing alignment that could cause overflow:

.container {
  display: flex;
  align-items: safe center;
  overflow: hidden; /* Prevent content overflow */
}

.item {
  flex: 1;
}

Here, align-items: safe center ensures that even if the .item flexes and grows beyond the container's bounds, it doesn't get cut off.

Box Alignment and Overflow Considerations

When dealing with box alignment, it's crucial to consider overflo