Generate template string representing CSS styles of grid container div.
grid_container_css(css_grid_template_areas, rows_height, cols_width)
character, CSS value for grid-template-areas
vector of character
vector of character
character
This is a helper function used in grid_template()
grid_container_css( "'a a a' 'b b b'", c("50%", "50%"), c("100px", "2fr", "1fr") )
returns
"display: grid; height: 100%; grid-template-rows: 50% 50%; grid-template-columns: 100px 2fr 1fr; grid-template-areas: 'a a a' 'b b b'; {custom_style_grid_container}"