The list-style-type property is used to amend the bullets in an unordered or ordered
list, enabling you to change the default bullets to something else (other than a custom
image). In an unordered list, this defaults to disc (a black bullet), but other values are
available, such as circle (a hollow disc bullet), square (a square bullet), and none, which
results in no bullet points. For ordered lists, this defaults to decimal (resulting in a numbered
list), but a number of other values are available, including lower-roman (i, ii, iii, etc.)
and upper-alpha (A, B, C, etc.) A full list of supported values is in Appendix D (CSS
Reference).
Generally speaking, the values noted are the best supported, along with the upper and
lower versions of roman and alpha for ordered lists. If a browser doesn’t understand the
numbering system used for an ordered list, it usually defaults to decimal. The W3C recommends
using decimal whenever possible, because it makes web pages easier to navigate.
I agree—things like alpha and roman are too esoteric for general use, plus there’s
nothing in the CSS specifications to tell a browser what to do in an alphabetic system after
z is reached (although most browsers are consistent in going on to aa, ab, ac, etc.).
list, enabling you to change the default bullets to something else (other than a custom
image). In an unordered list, this defaults to disc (a black bullet), but other values are
available, such as circle (a hollow disc bullet), square (a square bullet), and none, which
results in no bullet points. For ordered lists, this defaults to decimal (resulting in a numbered
list), but a number of other values are available, including lower-roman (i, ii, iii, etc.)
and upper-alpha (A, B, C, etc.) A full list of supported values is in Appendix D (CSS
Reference).
Generally speaking, the values noted are the best supported, along with the upper and
lower versions of roman and alpha for ordered lists. If a browser doesn’t understand the
numbering system used for an ordered list, it usually defaults to decimal. The W3C recommends
using decimal whenever possible, because it makes web pages easier to navigate.
I agree—things like alpha and roman are too esoteric for general use, plus there’s
nothing in the CSS specifications to tell a browser what to do in an alphabetic system after
z is reached (although most browsers are consistent in going on to aa, ab, ac, etc.).
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