How to eliminate gaps in CSS grid for optional areas

I've recently started experimenting with CSS grid and I have to say, it's pretty amazing! I'm currently working on a basic layout for mobile devices and using media queries to adjust the layout as the screen size increases.

At the moment, my layout consists of three areas: the content area, the sidebar area, and the optional commenting area. There is a gap of 40px between these areas.

Here is the CSS for the mobile layout:

.grid {
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-rows: auto;
  grid-gap: 40px;
}

If the commenting area is not present, I do not want the gap for it to be displayed.

As the page grows in size, I'm changing the layout using media queries like this:

@media screen and (min-width: 768px) {
  .content {
    grid-area: content;
  }
  .sidebar {
    grid-area: sidebar;
  }
  .comments {
    grid-area: comment;
  }
  .grid {
        grid-template-columns: 1fr 300px;
        grid-template-rows: auto;
        grid-template-areas:
            "content sidebar"
            "comment sidebar";
  }
}

When the comment area is not present, the 40px gap should also be removed.

I've considered creating a class to handle this, but I'm wondering if there's a simpler way to achieve this using just grid options. Any suggestions?

Answer №1

When the comment section is present, the container has two columns and two rows:

.grid {
        grid-template-columns: 1fr 300px;
        grid-template-rows: auto;
        grid-gap: 40px;
        grid-template-areas:
            "content sidebar"
            "comment sidebar";
  }

Therefore, the grid-gap will be applied between the first and second row (and column).

Even if the comment section is removed, the container still maintains two columns and two rows. The removal of the comment item does not alter the grid-template-areas property.

As a result, the grid-gap will still be present between the two rows. However, without the comment section, there will be a larger space in that grid area.

If you wish to eliminate the comment section, instead of deleting that grid item, consider removing the entire second row. Remember, grid-gap only functions between grid items.

.grid {
        grid-template-columns: 1fr 300px;
        grid-template-rows: auto;
        grid-gap: 40px;
        grid-template-areas:
            "content sidebar"
            /* "comment sidebar" */
            ;
  }

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