responsive #css #gridgrid layout

responsive-css-grid.css

/*
  AUTO GRID
  Set the minimum item size with `--auto-grid-min-size` and you'll
  get a fully responsive grid with no media queries.
*/

.auto-grid > * {
  max-width: 25rem;
  margin-left: auto;
  margin-right: auto;
}

.auto-grid > * + * {
  margin-top: 1rem;
}

@supports(display: grid) {
  .auto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(var(--auto-grid-min-size, 16rem), 1fr));
    grid-gap: 1rem;
  }
  
  .auto-grid > * {
    max-width: unset;
    margin: unset;
  }
}

/*
  WRAPPER
  A utility with a max width that contains child elements and horizontal centers them
*/
.wrapper {
  max-width: 55rem;
  margin: 0 auto;
  padding: 0 1rem;
}


/* Presentational styles */
body {
  background: #efefef;
  padding: 1rem;
  line-height: 1.4;
  font-family: Georgia, serif;
  font-size: 1.5rem;
}

li span {
  display: block;
  padding: 5rem 1rem;
  text-align: center;
  background: hsl(338,81%,41%);
  color: #ffffff;
}