border:5px solid blue; background-color:orange; width: 144px; height: 144px;
border-radius: 20px; border-radius: 0;
box-shadow: rgba(0,0,0,0.4) 10px 10px;
box-shadow: rgba(0,0,0,0.4) 10px 10px inset
box-shadow: rgba(0,0,0,0.4) 10px 10px 10px /* spread */
box-shadow: rgba(0,0,0,0.4) 10px 10px 10px /* spread */ inset