This attribute explicitly specifies the width of this block element in pixels. Some people leverage on a behavioral defect in browsers whereby embedding data in a list structure without LI tags will induce indentation. Strictly speaking, this HTML is not valid with respect to the established standards. Such syntax is illegal in current HTML standards and not recommended. Other methods can be used to enforce indentation that are much safer.
Lists are nestable.
It seems that ALL browsers have problems with roman numeral lists. Markers too large overlap onto content. Markers too large overlap onto content. Markers too large overlap onto content.