.flicker .l-section-img {
    transition: opacity 0.1s;

}

.flicker .l-section-img:nth-child(1) {

}

.flicker .l-section-img:nth-child(2) {
    animation: flicker-reverse 1s infinite;
}

@keyframes flicker {
    0% {
        opacity: 1;
    }
    10% {
        opacity: 0;
    }
    15% {
        opacity: 1;
    }
    40% {
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
}

@keyframes flicker-reverse {
    0% {
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    15% {
        opacity: 0;
    }
    40% {
        opacity: 1;
    }
    50% {
        opacity: 0;
    }
}