.hover-shadow:hover,
a.hover-shadow:hover,
img.hover-shadow:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.hover-shadow,
a.hover-shadow,
img.hover-shadow {
    transition: box-shadow ease .2s;
}

.hover-scale-up {
    transform: scale(1.1);
}

.hover-scale-up:hover {
    transition: transform 0.5s ease;
}

.hover-darken:hover, .hover-darken:hover img {
    filter: brightness(70%) grayscale(0.1);
}

.hover-darken, .hover-darken img {
    transition: filter 0.5s ease;
}

.hover-zoom:hover, .hover-zoom:hover img {
    transform: scale(110%);
}

.hover-zoom, .hover-zoom img, img.hover-zoom {
    transition: transform 0.7s ease;
}