CSS Grid Column

I noticed the number of column property is no longer in the designer. I’m I able to override the inline style of grid-template-columns in my custom css sheet?

is .row.resonsive-container the correct selector?

You can indeed overwrite the base styles.

which style do you wish to change?

Changing the column count in CSS will not work. The column count is hardcoded in various places in the internals of the container type.