how to use have and shadow in css code example

Example 1: css box shadow

#example1 {
  box-shadow: 10px 10px 8px #888888;
}

Example 2: box shadow css

box-shadow: 3px 3px 6px 5px #ccc;

or

box-shadow: 0px 5px 17px -7px rgba(0, 0, 0, 0.75);