The ToolTip's appearance is controlled by the built-in themes or the CSS styles. The ToolTip themes effects the appearance of all of the tooltip elements such as the tooltip header and tooltip callout.

C1ToolTip is designed to make customization easy for you. You have endless possibilities in changing its default appearance.

You can apply CSS styles to modify C1ToolTip's elements. C1ToolTip provides several built-in CSS Selectors that appear when you select the drop down arrow next to the CSSClass property