What is the reason for using <br /> over just <br>

Answer 1

In HTML (up to HTML 4): use <br>.
In HTML 5: <br> is preferred, but <br/> and <br /> is also acceptable.
In XHTML: <br /> is preferred. You can also use <br/>.

The / is simply needed for the XML syntactic version.

Answer 2

see my answer here.

as already told it is to follow the syntax.

some tags like <br> tag doesn't has closing tag in that case / is used in the end.

https://www.sololearn.com/discuss/152499/?ref=app

Answer 3

Thank you!