.maincontent {
    max-width: 1444px;
    margin: 0 auto;
    padding: 70px 0;
}

.gallery {
    display: flex;
    flex-wrap: wrap;
    padding: 0 3%;
}
.gallery-column {
    margin: 0 auto;
    max-width: 24.5%;
}
.gallery-column img {
    margin-top: 8px;
    vertical-align: middle;
    width: 100%;
}
.gallery-item {
    position: relative;
    display: block;
}
.gallery-item i {
    position: absolute;
    top: 50px;
    left: 20px;
    font-size: 2em !important;
    border-radius: 50%;
    margin: 0;
    padding: 10px;
    background: rgba(0, 0, 0, .75);
    color: #fff;
    opacity: 0;
    transition: all .25s;
}
.gallery-item:hover i {
    opacity: 1;
    top: 30px;
}
.gallery-item:hover img {
    opacity: .6;
}
@media screen and (max-width: 1200px) {
    .gallery-column {
        flex: 33%;
        max-width: 32.5%;
    }
}
@media screen and (max-width: 992px) {
    .gallery-column {
        flex: 50%;
        max-width: 49.5%;
    }
}
@media screen and (max-width: 600px) {
    .gallery-column {
        flex: 100%;
        max-width: 100%;
    }
}