Answers for "css drop shado"

drop shadow css

filter: drop-shadow(30px 10px 4px #4444dd);
drop-shadow(offset-x offset-y blur-radius color)

box shadow css

#Box-shadow-example {
Box-shadow:0 10px 20px rgba(0,0,0,0.19), 0 6px 6px rgba(0,0,0,0.23);
}
<!-- offset-x, offset-y, (blur-radius and/or spread-radius=optional) and color-->