<div class="grid-container">
  <div class="grid-item">1</div>
  <div class="grid-item">2</div>
  <div class="grid-item">3</div>
  <div class="grid-item">4</div>
  <div class="grid-item">5</div>
</div>

<div class="grid-container masonry-auto-flow">
  <div class="grid-item">1</div>
  <div class="grid-item">2</div>
  <div class="grid-item">3</div>
  <div class="grid-item">4</div>
  <div class="grid-item">5</div>
</div>

@import url("https://fonts.googleapis.com/css2?family=Exo:wght@600&display=swap");

body {
  width: 100vw;
  min-height: 100vh;
  counter-reset: section;
  font-family: "Exo", Arial, sans-serif;
  font-size: 20px;
  font-weight: 600;
  padding: 10px;
  box-sizing: border-box;

  display: flex;
  justify-content: center;
  align-items: center;
}

.grid-container {
  display: inline-grid;
  grid: masonry / repeat(3, 1fr);
  border: 1px solid;
  gap: 10px;
  margin: 5px;
}

.grid-container.masonry-auto-flow {
  masonry-auto-flow: next;
}

.grid-item {
  min-width: 15vw;
  background-color: #f90;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
  font-size: 2rem;
}

.grid-container div:nth-child(1) {
  background-color: #f36;
  height: 8em;
}

.grid-container div:nth-child(2) {
  background-color: #360;
  height: 14em;
}

.grid-container div:nth-child(3) {
  background-color: #09f;
  height: 10em;
}