CSS Grid Minmax() With Max-width Of 100%

This code uses CSS grid with minmax(30rem, 1fr). grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr)); Everything works fine, but when the viewport parent container gets s

Solution 1:

Sounds like you have a breakpoint when the screen width is 30rem. That calls for a media query.

Add this to your code:

@media (max-width: 30rem) {
   ul { grid-template-columns: 1fr; }
}

revised codepen

ul {
  list-style-type: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(30rem, 1fr));
  grid-auto-rows: 1fr;
  grid-gap: 10px;
}

li {
  background-color: #aaa;
  padding: 0.5rem;
}

@media (max-width: 30rem) {
  ul {
    grid-template-columns: 1fr;
  }
}

<ul class="list">
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
  <li>grid item</li>
<ul>