“Let’s make box b take up six columns. In style.css, create a rule for elements of class b. Use grid-column to set its starting column to 2. Use span to make the item take up six colum”
border: 2px blue solid;
grid-template: repeat(4, 1fr 2fr) / repeat(4, 3fr 2fr);
The issue is there are only 5 colums in the .grid, wich is the container. The child element .b how can it have 6 columns?