What is the meaning of list-style-type:none in CSS?

What does list-style-type:none mean in CSS? I am a novice, just started to learn div+css this statement what meaning

The Li tag is preceded by a style, which is the point. You can play it out and see.

<ul>  <li> Small dot </li>  <li style= "List-style-type:none;" > Not a little bit of </li>  <li> This problem Baidu does not have it? </li></ul>

Upstairs is an official note, in short

is to remove the ul,ol in front of the style, such as dots, Roman numerals, relaxed

Test list:   1. Loudly    2. Plan to play

Working with Styles:

List-style:none

Test list:    loudly     plan to play

List-style:none, this style is used to handle such things as removing tags <ul><li></li></ul> default styles and so on.

8PX can be changed, margin-right refers to the distance to the right, the value becomes larger when the gap between several numbers becomes larger.

Isn't there a small circle in front of Li?

List-style:none can be used to eliminate

The Li note has a default property, one bit: Set None to cancel that.

Then why did I go to list-style:none and have no effect? I haven't seen a bit of it.

Ist-style Set default value disc outside None