Hiding Things with CSS

Opacity

.item {
  transition: opacity 2s;
  visibility: hidden;
  position: absolute;
}

.item {
  visibility: visible; opacity: 1; 
}

Position

.item {
  position: absolute;
}
.item {
  left: -9999;
}

Display

.item {
  display: block;
}
.item {
  display: hidden;
}

Toggle Visibility when hiding elements