.item {
    width: 100%;
    overflow: hidden;
    background: #000;
    height: 250px;
    margin-bottom: 20px;
}

img {
    opacity: 0.6;
    width: 100%;
    height: 100%;
    transform: scale(1.15);
    transition: transform 0.5s, opacity 0.5s;
}

    img:hover {
        opacity: 1;
        transform: scale(1.03);
    }