.firetruck {
    display: block;
    margin-top: 1rem;
    animation: firetruck-drive 6s linear infinite;
    transform: translateX(-120px);
    animation-delay: 1s;
}

@keyframes firetruck-drive {
    0% {
        transform: translateX(-120px);
    }
    100% {
        transform: translateX(calc(100vw + 120px));
    }
}

.ambulance {
    display: block;
    margin-top: 1rem;
    animation: ambulance-drive 4s linear infinite;
    transform: translateX(-120px);
}

@keyframes ambulance-drive {
    0% {
        transform: translateX(-120px);
    }
    100% {
        transform: translateX(calc(100vw + 120px));
    }
}


.police {
    display: block;
    margin-top: 1rem;
    animation: police-drive 7s linear infinite;
    transform: translateX(-120px);
}

@keyframes police-drive {
    0% {
        transform: translateX(-120px);
    }
    100% {
        transform: translateX(calc(100vw + 120px));
    }
}