.imgContainer {
    position: relative;
}

    .imgContainer:hover .overlayLeft {
        opacity: 1;
    }

    .imgContainer:hover .overlayRight {
        opacity: 1;
    }

.overlayLeft {
    position: absolute;
    top: 50%;
    bottom: 50%;
    left: -35px;
    opacity: 1;
    transition: .3s ease;
    background-color: red;
    display: none;
}

.overlayRight {
    position: absolute;
    top: 50%;
    bottom: 50%;
    right: -35px;
    opacity: 1;
    transition: .3s ease;
    background-color: red;
    display: none;
}

/* When you mouse over the container, fade in the overlay icon*/
.overlayLeft:hover .overlayLeft {
    opacity: 1;
}

.overlayRight:hover .overlayRight {
    opacity: 1;
}

.overlayVCenter {
    padding: 5px;
    background-color: whitesmoke;
    opacity: 0.8;
    position: relative;
    top: -13px;
}

.showNavig {
    display: inline-block !important;
    cursor: pointer;
}