.reference-item {
    text-align: center;
    margin-top: 10px;
    margin-bottom: 20px;
    font-size: 15px;
}


a.reference-item-btn {
    padding: 15px 0px;
    color: #777;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    background: #eee;
    border-radius: 5px;
    display: block;
    border: solid 1px #eee;
}

    a.reference-item-btn:hover {
        background: #fff;
        color: #444;
        border: solid 1px #eee;
    }

    a.reference-item-btn img {
        margin-bottom: 4px;
        width:72px;
    }

@media screen and (max-width: 767px) {
    .reference-items {
        margin-bottom: 40px;
    }
}



@media screen and (max-width: 414px) {
    .reference-items {
        margin-left: -10px;
        margin-right: -10px;
    }

    .reference-item {
        padding-right: 10px;
        padding-left: 10px;
        margin-bottom: 20px;
    }

    a.reference-item-btn img {
        width: 50px;
    }
}