html list

1. List label:
<ol>Ordered list
<ul>Unordered list
<li>List item
<dl>Custom list
<dt>Custom list item
<dd>Description
2. Common list
1) Unordered list
    using tags : <ul><li>
    attribute: disc (default style, solid dot)
         circle (hollow dot)
         square (solid square)
added to type
2) Ordered list
   using tags: <ol><li>
   attribute: A (sequence of uppercase letters)
        a (sequence of lowercase letters)
        I (uppercase Roman letters)
        i (lowercase Roman letters)
        start (sequence starting from a certain number)
3) Nested lists
   use tags: <ul>, <ol> ,<li>
Example:

   <ul>
     <li>Pets</li>
        <ul>
            <li>猫</li>
            <li>狗</li>
        </ul>
     <li>Humans</li>
        <ul>
            <li>American</li>
            <li>Chinese</li>
        </ul>
   </ul>

4) Use tags for custom lists
   : <dl><dt><dd>