CSS grid fixed values

Say we have a grid that contains an aside and main. The CSS looks like this:

.wrapper {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 1rem;
}

This will break on small viewport sizes due to the lack of space. To avoid such an issue, always use a media query when using CSS grid like the above.

@media (min-width: 600px) {
    .wrapper {
        display: grid;
        grid-template-columns: 250px 1fr;
        gap: 1rem;
    }
}

Examples and use cases #

Main and aside #

In the following demo, try to resize the handler, you will notice that the grid will keep the two columns even though the space isn't enough. This will result in a horizontal scrolling.

When the "Toggle Defensive" is active, it will only add the grid if the viewport size is larger at a specific point.