<div class="card__container">
  <div class="card"></div>
  <div class="card"></div>
  <div class="card"></div>
  <div class="card"></div>
  <div class="card"></div>
  <div class="card"></div>
</div>

@import url("https://fonts.googleapis.com/css?family=Gochi+Hand");
@import "https://fonts.googleapis.com/css?family=Comfortaa:300,700|Bungee+Shade|Josefin+Sans:400";

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  width: 100vw;
  min-height: 100vh;
  margin: 0;
  background-color: #291642;
  font-family: "Gochi Hand", sans-serif;
  font-size: 100%;
  letter-spacing: 0.1rem;
  color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
}

.card__container {
  display: grid;
  grid-template-columns: repeat(3, 40vmin 30vmin);
  gap: 2vmin;
  border: 1px dashed #f36;
  counter-reset: card;
}

.card {
  counter-increment: card;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 50vmin;
  background-color: #f36;
}

.card:nth-child(1) {
  background-color: #f44336;
}

.card:nth-child(2) {
  background-color: #2196f3;
}

.card:nth-child(3) {
  background-color: #f44336;
}

.card:nth-child(4) {
  background-color: #2196f3;
}

.card:nth-child(5) {
  background-color: #f44336;
}

.card:nth-child(6) {
  background-color: #2196f3;
}

.card::before {
  content: counter(card);
  font-family: "Bungee Shade", cursive;
  font-size: 3.5rem;
}