box-shadow: 10px 10px grey;

box-shadow: -10px -10px grey;

box-shadow: 10px 10px 20px grey;

box-shadow: 10px 10px 20px 5px grey;

box-shadow: 10px 10px 20px 5px grey inset;

box-shadow: 0px 0px 20px 10px rgba(102, 186, 255, 0.4);

box-shadow:64px 64px 24px 40px rgba(0,0,0,0.4),12px 12px 0px 18px rgba(0,0,0,0.4) inset;

box-shadow는 레이아웃에 영향을 미치지 않음

box-shadow: 10px 10px #BCE55C, 20px 20px #CEF279, 30px 30px #E4F7BA;