grid.css

.grid {
    --grid-size: 100%;
    --gap: 11px;
    width: var(--grid-size);
    aspect-ratio: 1 / 1;
    display: grid;
    grid-template-columns: repeat(5, calc(100% / 5 - var(--gap)));
    grid-template-rows: repeat(5, calc(100% / 5 - var(--gap)));
    row-gap: var(--gap);
    column-gap: var(--gap);
    position: relative;
    box-sizing: border-box;
    color: #af611e;
}