.ani {
  opacity: 0;
}

.ani.ani-show {
  opacity: 1;
  transition: opacity 1s;
}

.ani2 {
  opacity: 0;
}

.ani2.ani2-show {
  opacity: 1;
  transition: opacity 2s;
}

.ani3 {
  opacity: 0;
}

.ani3.ani3-show {
  opacity: 1;
  transition: opacity 3s;
}

.ani4 {
  opacity: 0;
}

.ani4.ani4-show {
  opacity: 1;
  transition: opacity 4s;
}

.ani5 {
  opacity: 0;
}

.ani5.ani5-show {
  opacity: 1;
  transition: opacity 5s;
}