Lists can be made in a variety of ways through code; two of the most straightforward approaches include ordered and unordered lists.
Ordered lists <ol> are by default used to create a numbered list starting with “1”
Unordered lists <ul> are used to make lists that do not have an order or any kind of important hierarchy; they show up as bullet points.
Inside the Ordered or Unordered list tags, you must tag each item on your list with <li>.
Definition lists may be used to give your list some more visual hierarchy.
Definition lists <dl> are used when your listed items have sub-categories; all items in each sub-category are indented beyond their titles.
Definition terms <dt> are the titles on the listed sub-categories.
Description details <dd> are used to define the items listed in each sub-category.
Nested lists are a strategy to incorporate indentations into your already bulleted or numbered lists.
To make a nested list, simply put all of your tags for a new list inside your first list tags.
You can differentiate the ordered versus unordered lists in this style using the same approach as an ordinary ordered or unordered lists (<ol> and <ul>).
In a nested unordered list, the nested items are shown with a different style of bullet point by default.