CSS responsive grid layout: grid-column span breaking minmax

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I have a neat responsive grid like this:

grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));

This makes each grid item at least 200px wide. One of the items (the red one) is twice as wide, like this:

grid-column-end: span 2;

Great so far!

grid works fine on large screens

Now when I resize to a small width, the red item forces the grid to two columns. This gives me a weird small column, even though I specified the min width at 200px. Look:

grid breaks at small screens

I would really like the red item to collapse to a single column, so that the grid won't break.

The problem however is, I don't know the width of the total grid, so I can't use a mediaquery that triggers at a specific viewport size.

Is there a way to either force the red item to one column, or maybe to define the grid columns in another way that will solve this problem?

css-grid css
1 Answers

You need to keep the dimensions and a little bit of math in mind while using grid. If you're telling an item to span to 2 columns then that means you always want at least 2 columns in your Grid, it'll not turn into a 1 column grid if the screen gets smaller. Now you have a min-width of 400px for your grid.

For that weird sized column, as you have 2 columns and column 2 takes it's min 200px width and the item after that is left with that weird size.

You can write a media query at that breakpoint to tell your item 1 to stay in column 1 and that should fix it.

@media screen and (max-width:415px){
.item1 {
grid-column: 1;
background:red;
}
}

Check out the Codepen I'm linking here

see on Codepen

user_93506660
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