.btn.btn-file {
    position: relative;
    overflow: hidden;
}

    .btn.btn-file > input[type='file'] {
        position: absolute;
        top: 0;
        right: 0;
        min-width: 100%;
        min-height: 100%;
        font-size: 100px;
        text-align: right;
        opacity: 0;
        filter: alpha(opacity=0);
        outline: none;
        background: white;
        cursor: inherit;
        display: block;
    }




/*.masonry-grid {
    display: block;
}

.masonry-grid > .masonry-item {
    margin-bottom: 100px;*/ /* ou ce que tu veux */
/*}

.masonry-grid.row {
    display: block !important;
}*/