Unordered list

Ul and LI exist in pairs, but the child tag of UL can only be Li and no other tags can appear but other tags can be placed in < LI, but li cannot be written separately.

An ordered list

Ol/OL and LI exist in pairs, but the child tag of OL can only be Li and no other tags can appear but other tags can be placed in the li tag, but the Li tag cannot be written separately.

Type attribute type=” Sort type “start Specifies the number to start from. The value must be an Arabic number

The reversed attribute specifies whether the entries in the list are in reverse order. It requires no values, just reversed words, which is a new feature of HTML5.

<ol reversed></ol>
` `'There is no need to use the start attribute when using reversed to avoid sorting confusion #### define lists'` `js
    <dl>
        <dt>What is HTML?</dt> 
        <dd>HTML stands for Hypertext Markup language</dd>
        <dd>HTML is not a programming language</dd>
        <dd>12345679</dd>
        <dd>987456123</dd>
    </dl>
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Dl defines the list dt is the data item dd is the data item definition

A list of definitions is usually used in the footer of a website,