#tracking_code {
    animation: show 600ms 100ms cubic-bezier(0.38, 0.97, 0.56, 0.76) forwards;

    opacity: 0;
    transform: rotateX(-90deg);
    transform-origin: top center;
}

@keyframes show {
    100% {
        opacity: 1;
        transform: none;
    }
}