.square{
  position: absolute;
  width:115px;
  opacity:1;
  z-index:1;
  filter: drop-shadow(4px 4px 4px #b7a2f1);
}

.square1{
  top:15%;
  right:3%;
}

.square2{
  top:29%;
  left:3%;
}

.square3{
  top:67%;
  right:7%;

}