how to make line in html code example

Example 1: how to make new line in html paragraph

<p>
Will Mateson<br />
Box 61<br />
Cleveland, Ohio<br />
</p>

Example 2: horizontal line html

<!-- code -->

<hr>

<!-- code -->

Example 3: how to draw a horizontal line in javascript

var elem = document.createElement("hr");
elem.setAttribute("width", "100px");
document.body.appendChild(elem);