how to underline link in html code example

Example 1: text underline hover css

a:hover {
  text-decoration: underline;
}

Example 2: how to change hyperlink color in css

a {
  background-color: red;
  color: white;
  padding: 1em 1.5em;
  text-decoration: none;
  text-transform: uppercase;
}

Example 3: underline text in html

<!-- Using 'u' tag we can draw underline below the text in HTML -->
<p>Hello all <u>Welcome here !!!</u></p>