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CSS

Posted by Kristian Woods
Kristian Woods
23,414 Points

CSS Grid - How do you get a item to take up 100% of the free space available to it

I thought the difference in using auto-fit and auto-fill, was that auto-fit collapsed the width of the implicit column, thus allowing for an actual 'real' column could take up the free space available to it?

I have THREE columns - I'm trying to get it, so that when the layout breaks into a TWO column layout, the third item (the first to break to a new line), takes up 100% of the container. Yet, it doesn't do that.... Why?

The CSS has been written with sass

<div class="wrapper">
  <div class="child"></div>
  <div class="child"></div>
  <div class="child"></div>
</div>

.wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  grid-auto-rows: minmax(50px, 1fr);
  grid-gap: 10px;
   & .child {
    background-color: red;
  }
}

https://codepen.io/Woodenchops/pen/MQJrYy

1 Answer

Steven Parker
Steven Parker
231,046 Points
Steven Parker
Steven Parker
231,046 Points

As to why, it's because it has to share that 1fr with it's implicit neighbor cell.

But to get around it, the first thing that came to mind was a media query to make it span both columns:

@media (max-width: 936px) {
  .child:last-child {
    grid-column: 1 / -1;
  }
}