minha resposta

destaques.css:

.caixa {
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.destaques {
  display: grid;
  grid-gap: 0.2rem;
  grid-template-columns: 25% 25% 25% 25%;
  grid-template-rows: 33.33% 33.33% 33.33% 33.33%;
  height: calc(100vh - 50px);
}

.destaques__titulo {
  background: rgba(0, 0, 0, 0.5);
  text-align: center;
  color: #fdfdfd;
  padding: 0.6rem;
  width: 100%;
}

.destaques__principal {
  background-image: url('../img/fortnite.jpg');
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  grid-column-start: 1;
  grid-column-end: 4;
  grid-row-start: 1;
  grid-row-end: 3;
}

.destaques__secundario:nth-child(2) {
  background: url('../img/pubg.jpg') center / cover no-repeat;
  grid-column: 4 / 4;
  grid-row: 1 / 1;
}

.destaques__secundario:nth-child(3) {
  background: url('../img/slack.png') center / cover no-repeat;
  grid-column: 4 / 4;
  grid-row: 2 / 2;
}

.destaques__secundario:nth-child(4) {
  background: url('../img/whatsapp.png') center / cover no-repeat;
  grid-column: 4 / 4;
  grid-row: 3 / 3;
}
.destaques__secundario:nth-child(5) {
  background: url('../img/cs-go.jpg') center / cover no-repeat;
  grid-column: 3 / 3;
  grid-row: 3 / 3;
}

.destaques__categorias {
  grid-column: 1 / 3;
  grid-row: 3 / 3;
}

.destaques__categorias___lista {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  height: 100%;
}

.destaques__categorias___item {
  display: flex;
  align-items: center;
  background: #fdfdfd;
  border-left: 5px solid transparent;
  color: #333333;
  padding: 1rem;
  width: 50%;
}

.destaques__categorias___link {
  color: inherit;
}