/* ---- grid ---- */

.grid {
    background: #DDD;
}

/* clear fix */
.grid:after {
    content: '';
    display: block;
    clear: both;
}

/* ---- .grid-item ---- */

.grid-sizer,
.grid-item {
    width: 33.333%;
}

.grid-item {
    float: left;
    overflow: hidden;
}

.grid-item img {
    display: block;
    width: 100%;
    transition: all .3s ease-in-out;
}

.grid-item img:hover {
    transform: scale(1.2);
}