HTML <br> Tag:
The <br> tag inserts a single line break.
The <br> tag is an empty tag which means that it has no end tag.
The <br/> Tag in HTML 5:
The break tag (<br/>) is used to force a line break in HTML code. It is one of the inline tags used to group and separate content in HTML.
Example
<p>The explanation of "line break tag":</p><p>
My Bonnie lies over the ocean.<br>My Bonnie lies over the sea.<br>My Bonnie lies over the ocean.<br>Oh, bring back my Bonnie to me.</p>