List-style allows us to create or install a sign or bullet in each list post or other lists.
Rules that apply to list-style is as follows:
List-style allows us to create or install a sign / bullet in each list post or other lists.
Rules that apply to list-style is as follows:

For Example :

Here are the various list-style and way of application:

A. list-style-type

1. none

To Remove all Marks.

• ul{ list-style-type:none; }
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2. circle

list style using cicle mark.

• ul{ list-style-type:circle; }
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3. disc

List style using globe (default value).

• ul{ list-style-type:disc; }
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4. decimal

List style using decimal number.

• ul{ list-style-type:decimal; }
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5. decimal-leading-zero

List style using number with zero , from 1- 9

NB: Not working on Internet Explorer

• ul{ list-style-type:decimal-leading-zero; }
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6. lower-roman

List Style using lower-roman.

• ul{ list-style-type:lower-roman; }
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7. upper-roman

List style using UPPERCASE-roman.

• ul{ list-style-type:upper-roman; }
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8. lower-alpha

List style using lower alphabet

NB: Not Working on Internet Explorer

• ul{ list-style-type:lower-alpha; }
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9. upper-alpha

List style using UPERCASE alphabet.

NB: Not supported by Internet Explorer

• ul{ list-style-type:upper-alpha; }
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B. list-style-position

1. inside

To mark the beginning of the text as well as limit the text that is placed on the right.

• ul{ list-style-position:inside; }
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2. outside

To give mark that are beyond the default text

• ul{ list-style-position:outside; }
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3. list-style-image

1. url

To create a list with a specific image.

• ul{ list-style-image:url(list_style.jpg); }
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2. none

To remove images that applied in the above code ..

once removed, then the value will be the default.

• ul{ list-style-image:none; }
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Please on trial and error

For Online Demo:

Click top button for complete explanation.
Good luck.

Hopefully useful.