
What is HTML Tag or Element?
An HTML tag is a piece of markup language used to indicate the beginning and end of an HTML element in an HTML document.
Tag Description

Here
Opening Tag :
The Tag Name which indicate the tag is started. There is lots of build in tags in html, for example
html
body
h1 to h6
p etc
Attribute & Value :
Attribute & Value is a key pair data where attribute is key & value is value, those are included inside the opening tag. there is 2 type of attributes, user defined means user can specify any types of attributes with value, there lots of build in attributes with values such as:
class
id
name
type
required etc
Other Tag or Content :
This section can contain other tags such as <div></div>, <span></span>, <p></p> etc, Or there can be some images, or text.
Closing Tag :
Most of tag has closing tag, It means that the tag ending. Some tag hasn’t closing tag such as img, br, hr input etc.
Tag Example
<section class="contact section" id="contact">
<div class="content-block" data-name="custom-attribute">
<ul class="content-block-ul rose-ul">
<li class="content-block-ul-li"></li>
</ul>
</div>
</section>