/* Correction */

.autogrid {
  display: grid;
  grid-column-gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(0, 1fr));
}

/* variante
.autogrid {
  display: grid;
  grid-column-gap: 1rem;
  grid-auto-flow: column;
  grid-auto-column: 1fr;
}
*/


/* Reset et Déco */

html {
  font-size: 62.5%;
  box-sizing: border-box;
}

* {
  box-sizing: inherit;
}

body {
  max-width: 80%;
  margin: 2rem auto;
  background: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 1.8rem;
  line-height: 1.5;
}

h1 {
  margin-top: 20px;
  margin-bottom: 40px;
  color: #345;
  text-shadow: 1px 1px 1px #fff;
  font-weight: normal;
}

.autogrid {
  margin-bottom: 1rem;
}

div>div {
  padding: 1rem;
  color: #fff;
}

div>div:nth-of-type(1) {
  background: orange;
}

div>div:nth-of-type(2) {
  background: hotpink;
}

div>div:nth-of-type(3) {
  background: olivedrab;
}

div>div:nth-of-type(4) {
  background: dodgerblue;
}

div>div:nth-of-type(5) {
  background: slategray;
}

div>div:nth-of-type(6) {
  background: tomato;
}

div>div:nth-of-type(7) {
  background: peru;
}