.ill_g {
    width:60%;
    columns: 3;
    padding: 0 15px;
    margin: 0 auto 100px auto;
}

.ill_g li {
    margin-bottom: 15px;
    list-style: none;
    float: left;
}

.ill_g img {
    width: 90%;
    height: auto;
    vertical-align: bottom;
}

@media only screen and (max-width: 900px) {
    .ill_g {
        columns: 3;
        padding: 0 10px;
    }
}

@media only screen and (max-width: 768px) {
    .ill_g {
        width:90%;
        columns: 3;
        padding: 0 10px;
    }
}

#lightbox .lb-image {
  border: none;
}