The MaskPositionX property in the BaseStyles class represents the mask-position-x CSS property. This property specifies the horizontal position of a mask image within an element. It is a nullable type, meaning it can hold a value of type Sandbox.UI.Length or be null if not set.
To use the MaskPositionX property, you can set it to a specific length value to define the horizontal position of the mask image. This can be useful for aligning mask images precisely within an element.
BaseStyles styles = new BaseStyles(); styles.MaskPositionX = new Length(50, LengthUnit.Percent); // Sets the mask position to 50% from the left