The combobox's appearance is controlled by the built-in themes or the CSS styles. The combobox themes effects the appearance of all of the combobox elements such as the combobox items and columns.

C1ComboBox is designed to make customization easy for you. You have endless possibilities in changing its default appearance.

You can apply CSS styles to modify C1ComboBoxs elements. C1ComboBox provides several built-in CSS Selectors that appear when you select the drop down arrow next to the CSSClass property