using css to put a border around part of an html div 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 a text with a border in css

h1{
    width:30px;
    margin-top:-10px;
    margin-left:5px;
    background:white;
}

/* Change the values to achieve what design you want */