RocketChat/Rocket.Chat

.scrollShadow {
    overflow: hidden;

    &::before,
    &::after {
        position: absolute;
        z-index: 0;

        width: 100%;
        height: 1px;

        content: "";
        transition: all 0.3s;

        background-color: rgba(47, 52, 61, 0.9);

        box-shadow: 0 0 12px 1px rgba(47, 52, 61, 0.9);
    }

    &--atTop::before {
        box-shadow: none;
    }

    &--atBottom::after {
        box-shadow: none;
    }
}