/********* Simple or original overlay *******/
/* Main container */
.overlay-image {
    position: relative;
    width: 100%;
}
    /* Original image */
    .overlay-image .image {
        display: block;
        width: 100%;
        height: auto;
    }
    /* Original text overlay */
    .overlay-image .text {
        color: #fff;
        font-size: 12px;
        line-height: 1.5em;
        text-shadow: 2px 2px 2px #000;
        text-align: center;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 100%;
    }

    /********* Overlay on hover *******/
    /* New overlay on hover */
    .overlay-image .hover {
        position: absolute;
        top: 0;
        height: 100%;
        width: 100%;
        opacity: 0;
        transition: .5s ease;
    }
    /* New overlay appearance on hover */
    .overlay-image:hover .hover {
        opacity: 1;
    }

    /********* Background and text only overlay on hover *******/
    .overlay-image .normal {
        transition: .5s ease;
    }

    .overlay-image:hover .normal {
        opacity: 0;
    }

    .overlay-image .hover {
        background-color: rgba(0,0,0,0.5);
    }