How Can I Efficiently Rearrange Flexbox Items for Different Screen Sizes?

Flex Order Property: Rearranging Items for Mobile and Desktop Views

When managing the layout of items within a container, the order property along with flexbox can be a powerful tool. However, challenges can arise when attempting to rearrange items specifically for mobile and larger screen views.

Consider the following scenario: You have three divs within a container, with the order set to 2, 1, and 3 on mobile using the order property. This works well on mobile devices. However, on larger screens, the order appears incorrect.

The root cause of this issue lies in the nature of flexbox. Flexbox is designed to align content by distributing space within the container. In a row wrap container, items must wrap to new rows, unlike a grid system where items can wrap arbitrarily.

Therefore, in a flexbox container, item div3 cannot wrap beneath item div2 because it would create a grid-like layout rather than a straight row. As a result, gaps appear between items that aren't the tallest in the row.

To avoid these unsightly gaps, consider using column wrap instead of row wrap. In a column wrap container, items wrap to new columns, allowing for a layout where div2 and div3 can align vertically.

For example:

.container {
    display: flex;
    flex-direction: column;
    height: 200px;
}
div.orange {
  background-color: orange;
}
div.blue {
  order: -1;
  background-color: aqua;
}
div.green {
  background-color: lightgreen;
}
.container > div {
  width: 100%;
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

@media screen and (min-width: 800px) {
    .container {
        flex-wrap: wrap;
    }
    div.orange {
        flex-basis: 100%;
        width: 50%;
    }
    div.blue {
        flex-basis: 50%;
        width: 50%;
        order: 0;
    }
    div.green {
        flex-basis: 50%;
        width: 50%;
    }
}

In this example, the mobile layout maintains the order of 2, 1, 3, while the desktop layout rearranges the items to 1, 2, 3. The gaps are eliminated because items wrap vertically instead of horizontally.

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