# HTML Elements
An *HTML element* is everything from the start tag to the end tag as well as the content inside.
`Content goes here...`
HTML elements can be nested (this means that elements can contain other elements).
HTML elements with no content are called empty elements, eg. `
` , `
` etc.
HTML tags are not case-sensitive which means `` is the same as `
`
Common HTML Elements:
| Element | Reference |
| --- | --- |
| `` | represents the **root** (top-level element) of an HTML document |
| `
` | contains machine-readable information (metadata) about the document |
| `` | represents the content of an HTML document |
| `` to `` | represent six levels of section headings |
| `
` | represents a paragraph |
| `