A developer worked on solving a dynamic layout challenge using CSS Grid.
They initially attempted to use Flexbox, then switched to using CSS Grid for rendering a list of items in two columns.
To achieve the desired layout, the developer used a grid container with 8 items, with the 7th and 8th items spanning both columns by adding a specific class.
The CSS code included properties like display: grid, grid-template-columns, grid-column, and styling for grid items to create the layout as intended.