@charset "utf-8";






.grid-container {
  display: grid;
  width: 100%;
  height: 100vh;
  grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(4, 1fr);

}

.grid-item {
    border:1px solid blue
}

.first-item {
    grid-column: 1 / 2;
    grid-row: 1 / 2;    
}