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+## Description
+
+There is a way to add styles to a whole column.
+
+## Code
+
+```ruby
+require 'axlsx'
+
+p = Axlsx::Package.new
+wb = p.workbook
+
+s = wb.styles
+percent = s.add_style num_fmt: 9, bg_color: '0000FF'
+
+wb.add_worksheet(name: 'Custom column types') do |sheet|
+ sheet.add_row ['A', 'B', 'Percent', 'Hidden', 'E']
+ sheet.add_row [1, 2, 0.3, 4, 5.0]
+ sheet.add_row [1, 2, 0.2, 4, 5.0]
+ sheet.add_row [1, 2, 0.1, 4, 5.0]
+
+ # Apply the percent style to the column at index 2 skipping the first row.
+ sheet.col_style 2, percent, row_offset: 1
+ sheet.column_info[3].hidden = true
+end
+
+p.serialize 'column_styles_example.xlsx'
+```
+
+## Output
+
+![Output](images/column_styles_example.png "Output")