.b-gridbase:not(.b-masked).b-grid-empty .b-empty-text{
  height:100%;
  width:100%;
  display:flex;
  justify-content:center;
  align-items:center;
  font-size:2em;
  transition:opacity 0.4s;
  opacity:0.3;
}
.b-gridbase:not(.b-masked).b-dragging-file .b-empty-text{
  opacity:1;
}