How to Remove the Last Column Margin Without Knowing the Row Count?

Last Column Margin Removal Without Row Count Knowledge

In web design, it is often desirable to remove the right margin for every last element in a row. This task becomes challenging when dealing with dynamic row lengths, where the number of elements per row cannot be predetermined.

Negative Margins

One trick to achieve this effect is to add negative margins to the parent container. This creates the illusion that child elements are perfectly aligned within the parent, while maintaining the desired spacing between them:

ul {
    margin-left: -5px;
    margin-right: -5px;
}

li {
    margin-left: 5px;
    margin-right: 5px;
}

Since margin-left and margin-right are applied equally, they can accommodate both LTR (left-to-right) and RTL (right-to-left) element positioning. However, it may require adding overflow-x: hidden to prevent horizontal scrolling.

Media Queries

An alternative solution involves using media queries to target the last element in each row. This approach is less concise than using negative margins but provides greater control over styling adjustments:

@media (min-width: 400px) and (max-width: 499px) {
    li:nth-child(even) {
        margin-right: 0;
        border-right: none;
    }
}
/* ... */

By specifying media queries for different screen sizes, it is possible to define the last element styling for various row lengths.

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