Improve Grid Builder to prevent grid blowout

Hi,

when using the grid builder with two columns each 1fr one column can blow out when for example a long link or word is inside it. Especially on mobile devices. The solution for this is the repeat(2, minmax(0, 1fr)) value.
A detailed description can be found here: Equal Width Columns in CSS Grid are Kinda Weird | CSS-Tricks - CSS-Tricks