CSS

grid template

grid-template-columns: repeat(auto-fit, minmax(30ch, 1fr));

grid template css

/* grid-template is a shorthand for grid areas, rows, and columns */
/* grid-template-areas grid-template-rows / grid-template-column values */
grid-template: 
            "a a a" 40px
            "b c c" 40px
            "b c c" 40px / 1fr 1fr 1fr;