.slide_03 .subject_card{
    position: absolute;
    opacity: 0;
    pointer-events: none;
    animation: card_ani 15s linear infinite;
    animation-delay: calc(3s * var(--delay));
}

.slide_03 .subject_card:last-child{
    animation-delay: calc(-3s * var(--delay));
}

@keyframes card_ani {
    0%{
    opacity: 0;
    transform: translateY(100%) scale(0.7);
      }
    5%, 20%{
    opacity: 0.6;
    transform: translateY(100%) scale(0.9);
    }
    25%, 40%{
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0%) scale(1);
    }
    45%, 60%{
    opacity: 0.6;
    transform: translateY(-100%) scale(0.9);
    }
    65%, 100%{
    opacity: 0;
    transform: translateY(-100%) scale(0.7);
    }
}