.transition_container {
   position: absolute;
   top: 0;
   left: 0;
   height: 100%;
   width: 100%;
   overflow: auto;
   background: var(--back-color);
}

.transition_slidein {
   animation-name: slidein;
   animation-duration: 0.3s;
   z-index: 64;
}

@keyframes slidein {
   from {
      left: 100%;
   }
   to {
      left: 0%;
   }
}