They may appear in any order. Attribute names are always case-insensitive.
Attribute values are generally case-insensitive.
Text enters on one side of the screen and travels to the opposite side and cycles repeatedly from where it started. The standard HTML color specification methods. Specifies the direction the Marquee text should scroll. Default value is the height of the contained text. Positive integer values representing the pixel height of the marquee box or a percentage of the screen height.