*,
*::after,
*::before {
  margin: 0;
  padding: 0;
  box-sizing: inherit;
}

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

body {
  font-family: 'Nunito', sans-serif;
  color: #333;
  font-weight: 300;
  line-height: 1.6;
}

.contenitore {
  width: 60%;
  margin: 2rem auto;
}

.galleria {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  grid-template-rows: repeat(8, 5vw);
  grid-gap: 1.5rem;
}

.galleria__immagine {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.galleria__elemento--1 {
  grid-column-start: 1;
  grid-column-end: 3;
  grid-row-start: 1;
  grid-row-end: 3;

  /** Sintassi alternativa **/
  /* grid-column: 1 / span 2;  */
  /* grid-row: 1 / span 2; */
}

.galleria__elemento--2 {
  grid-column-start: 3;
  grid-column-end: 5;
  grid-row-start: 1;
  grid-row-end: 3;

  /** Sintassi alternativa **/
  /* grid-column: 3 / span 2;  */
  /* grid-row: 1 / span 2; */
}

.galleria__elemento--3 {
  grid-column-start: 5;
  grid-column-end: 9;
  grid-row-start: 1;
  grid-row-end: 6;

  /** Sintassi alternativa **/
  /* grid-column: 5 / span 4;
  grid-row: 1 / span 5; */
}

.galleria__elemento--4 {
  grid-column-start: 1;
  grid-column-end: 5;
  grid-row-start: 3;
  grid-row-end: 6;

  /** Sintassi alternativa **/
  /* grid-column: 1 / span 4;  */
  /* grid-row: 3 / span 3; */
}

.galleria__elemento--5 {
  grid-column-start: 1;
  grid-column-end: 5;
  grid-row-start: 6;
  grid-row-end: 9;

  /** Sintassi alternativa **/
  /* grid-column: 1 / span 4; */
  /* grid-row: 6 / span 3; */
}

.galleria__elemento--6 {
  grid-column-start: 5;
  grid-column-end: 9;
  grid-row-start: 6;
  grid-row-end: 9;

  /** Sintassi alternativa **/
  /* grid-column: 5 / span 4; */
  /* grid-row: 6 / span 3; */
}