how to make a border effect in html code example

Example 1: how to add a border around text in html

<p style="border:3px; border-style:solid; border-color:#FF0000; padding: 1em;">
  First example with text surrounded by a red border.<br>This example also has multiple lines.
</p>

Example 2: how to make the border invisible in html

#(your id)
{
	border:none;
}