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# Tags

In HTML, `tags` are the basic building blocks used to **structure and present content** on a web page.

Tags are composed of keywords enclosed in angle brackets (`< >`), like `<tag>`.

A tag consists of an opening tag (`<tag>`) and a closing tag (`</tag>`), with content that the tag applies to placed between these two tags.

Below is an example of the structure of an HTML tag.

```html title="HTML Tag Structure"
<tag>Content that the tag applies to</tag>
```

 

The opening tag is denoted by `<tagname>` (e.g., `<html>`) with only angle brackets, while the closing tag is denoted by `</tagname>` (e.g., `</html>`) with a slash (`/`) **before the tag name**.

```html title="HTML Tag Example"
<html>
 Hello World!
</html>
```

 

> *Note*: Some tags can also have a slash (`/`) at the end of the tag name, and these are called `self-closing tags`. We will learn more about self-closing tags in a later lesson.

 

## Practice

Follow the emphasized parts of the code and try to write it out yourself.

HTML tags start with `<tagname>` and end with `</tagname>`. For example, a tag that starts with `` must end with ``.

### Which of the following is the most appropriate representation of a closing tag?