Responsive horizontal line CSS code example
Example 1: html horizontal line style
<!-- HTML -->
<!-- You can change the style of the horizontal line like this: -->
<hr style="width:50%", size="3", color=black>
<!-- Or like this: -->
<hr style="height:2px; width:50%; border-width:0; color:red; background-color:red">
Example 2: how to draw a horizontal line in javascript
var elem = document.createElement("hr");
elem.setAttribute("width", "100px");
document.body.appendChild(elem);