1. HTML stands for HyperText Markup Language and is used to create the structure and content of a webpage.
2. Most HTML elements contain opening and closing tags with raw text or other HTML tags between them.
3. HTML elements can be nested inside other elements. The enclosed element is the child of the enclosing parent element.
4. Any visible content should be placed within the opening and closing  tags .
5. Headings and sub-headings, 
    to 
    tags, are used to enlarge text.
6. ,  and 
    tags specify text or blocks.
7. The  and  tags are used to emphasize text.
8. Line breaks are created with the 
 tag.
9. Ordered lists (
   ) are numbered and unordered lists (
   ) are bulleted.
10. Images () and videos () can be added by linking to an existing source.