box shadow on bottom only code example

Example 1: css box shadow not on bottom

box-shadow: 0px -8px 10px lightgrey;

Example 2: box shadow bottom only

box-shadow: 0 4px 2px -2px gray;

Example 3: inner box shadow

div {
     box-shadow: inset 0 0 10px #000000;
}

Example 4: css bottom shadow

box-shadow: 0px 15px 10px -15px #111;