.thumbnail {
    width: 120px;
    height: 100px;
    background-size: contain;
    background-repeat: no-repeat;
    background-color: transparent;
    background-position: center;
    position: relative;
    margin: 5px;
    float: left;
    text-align: center;

    & div {
        width: 50px;
        height: 50px;
        top: 25%;
        left: 25%;
    }

    &:before {
        opacity: 0;
        transition: opacity .6s;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        content: attr(title);
        position: absolute;
        background-color: #000;
        color: #fff;
        line-height: normal;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        padding: 5px;
    }

    &:hover {
        &:before {
            opacity: .7;
        }
    }
}