For certain parameters, a length value is required. Examples include the
setting of font sizes (e.g., in cell_text()) and thicknesses of lines
(e.g., in cell_borders()). Setting a length in pixels with px() allows
for an absolute definition of size as opposed to the analogous helper
function pct().
px(x)A character vector with a single value in pixel units.
the numeric value to format as a string (e.g., "12px") for
some tab_options() arguments that can take values as units of
pixels (e.g., table.font.size).
Use exibble to create a gt table. Use the px() helper to define the
font size for the column labels.
exibble %>%
gt() %>%
tab_style(
style = cell_text(size = px(20)),
locations = cells_column_labels()
)

7-3
Other helper functions:
adjust_luminance(),
cell_borders(),
cell_fill(),
cell_text(),
cells_body(),
cells_column_labels(),
cells_column_spanners(),
cells_footnotes(),
cells_grand_summary(),
cells_row_groups(),
cells_source_notes(),
cells_stub_grand_summary(),
cells_stub_summary(),
cells_stubhead(),
cells_stub(),
cells_summary(),
cells_title(),
currency(),
default_fonts(),
escape_latex(),
google_font(),
gt_latex_dependencies(),
html(),
md(),
pct(),
random_id(),
stub()