.fade {
  transition: all 2000ms;
  opacity: 0;
  visibility: hidden;
  transform: translate(0px, 50px);
}

.fadein {
  opacity: 1;
  visibility: visible;
  transform: translate(0px, 0px);
} 

/*スクロールなしのフェードイン*/
.fade-in-bottom {
   opacity: 0;
   animation-name: fadein-bottom;
   animation-duration: 1.5s;
   animation-timing-function: ease-out;
   animation-fill-mode: forwards;
}
@keyframes fadein-bottom {
   0% {
      opacity: 0;
      transform: translateY(20px);
   }
   100% {
      opacity: 1;
      transform: translateY(0);
   }
}