.square-holder {
    padding: 15px;
    border: 1px solid #cecece;
    align-items: center;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    background-color: white;
    min-height: 100px
}

    .square-holder img {
        max-width: 100%;
        filter: grayscale(100%);
        transition: all 0.3s;
    }

    .square-holder:hover img {
        filter: none;
        transform: scale(1.1);
    }

@media (max-width: 576px) {
    .square-holder img {
        width: 80%;
        float: left;
    }
}