change button shadow color css code example
Example 1: box shadow
box-shadow: 0 0 10px 0 rgba(0,0,0,.1);
// copy this
Example 2: html make box shadow
box-shadow: 0 20px 20px rgba(0, 0, 0, 0.2), 0px, 0px, 50px rgba(0, 0, 0, 0.2)
box-shadow: 0 0 10px 0 rgba(0,0,0,.1);
// copy this
box-shadow: 0 20px 20px rgba(0, 0, 0, 0.2), 0px, 0px, 50px rgba(0, 0, 0, 0.2)