body, html {
    height: 100%;
    width: 100%;
}

main {
    min-height: 100vh;
}

.card {
    transition: transform 0.2s, box-shadow 0.2s;

}
.card.shadow:hover {
    transform: scale(1.01);
    box-shadow: 0 1rem 3rem rgba(0,0,0,.175) !important;
}