body {
    color: white;
    background-color:black;
    font-size: 1.6rem;
    margin: 0;
}

  
  .gallery {
    display: grid;
    grid-template-rows:300px 1fr 100px; 
    grid-template-columns:10% 40% 40% 10%; 

}

.gallery__item--1 {
grid-column-start: 1;
    grid-column-end: 5;
    grid-row-start: 1;
    grid-row-end: 1;
   
}

.gallery__item--2 {
    grid-column-start: 2;
    grid-column-end: 3;
    grid-row-start: 2;
    grid-row-end: 3;
}

.gallery__item--3 {
    grid-column-start: 3;
    grid-column-end: 4;
    grid-row-start: 2;
    grid-row-end: 3
}