def expand_grid_area(tokens, name):
    """Expand the ``grid-area`` property."""
    tokens_list = _expand_grid_column_row_area(tokens, 4)
    sides = ('row-start', 'column-start', 'row-end', 'column-end')
    for tokens, side in zip(tokens_list, sides):
        yield f'grid-{side}', tokens
Expand the ``grid-area`` property.
weasyprint/css/validation/expanders.py