In Align Attributed what need <br/> are <hr/>.

Question

Where <br/> means tag and the content‚ then what is content means here.And what mean <p align="center">.

Answer 1

<hr> is a horizontal line
<br> is a line break
<p> is a paragraph
then applying a style to those elements like <p align="left">
or
attach an inline style to the tag, <p style="font-size:20px; text-align:left;">
or
give these tags an id or pick them up from parent div, for example if the p tag sits in a div with a class of myDiv then in css do,
.myDiv p {text-align:left;}
etc etc