How to Remove Bottom Margin from Flex Items When They Wrap?

Removing Margin from Flex Items When They Wrap

When working with flexbox, it's often necessary to remove the bottom margin from the last item in a row, especially when creating dynamic lists where targeting specific items is not feasible. This can result in uneven spacing between items in different rows.

In this context, flexbox does not offer an inherent feature to modify CSS styles based on the position of an item within a row. However, there are alternative approaches to achieve the desired effect.

Using the gap Property

CSS has introduced the gap property, which can be used to add space between flex items. When set to an appropriate value, it can effectively remove the margin from the last item in each row. However, this property is not supported by older browsers.

.tags {
  gap: 5px;
}

Adjusting the Margins

Another approach is to modify the bottom margin of the li element, but only when it's the last item in a row. For this, we can utilize JavaScript to dynamically adjust the styles based on the element's position within its container.

const tags = document.querySelectorAll('.tags li');
tags.forEach((tag, index) => {
  if (index % 4 === 3) {
    tag.style.marginBottom = 0;
  }
});

Using Pseudo-Elements

Pseudo-elements can also be employed to insert an invisible element before or after the last item in each row and apply styles to it, such as setting a negative margin to cancel out the margin from the li element.

.tags li:last-of-type::after {
  content: "";
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-bottom: -5px;
}

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