how to add shadow in html code example

Example 1: adding shadow to a div

/* CSS box shadow look like paper lift up*/
/* provide shadow to all four corners */
/* source - W3Schools.com */
 box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2), 0 6px 20px 0 rgba(0, 0, 0, 0.19);

Example 2: how to add shadow css

h1 {
  text-shadow: 2px 2px;
}