style.css

@import url("https://fonts.googleapis.com/css?family=Cardo:400i|Rubik:400,700&display=swap");

:root {
    --d: 700ms;
    --e: cubic-bezier(0.19, 1, 0.22, 1);
    --font-sans: "Rubik", sans-serif;
    --font-serif: "Cardo", serif;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    display: grid;
    place-items: center;
}

.page-content {
    display: grid;
    grid-gap: 1rem;
    padding: 1rem;
    max-width: 1024px;
    margin: 0 auto;
    font-family: var(--font-sans);
}

@media (min-width: 600px) {
    .page-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 800px) {
    .page-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

.card {
    position: relative;
    display: flex;
    align-items: flex-end;
    overflow: hidden;
    padding: 1rem;
    width: 100%;
    text-align: center;
    color: whitesmoke;
    background-color: whitesmoke;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.1), 0 2px 2px rgba(0, 0, 0, 0.1),
        0 4px 4px rgba(0, 0, 0, 0.1), 0 8px 8px rgba(0, 0, 0, 0.1),
        0 16px 16px rgba(0, 0, 0, 0.1);
}

@media (min-width: 600px) {
    .card {
        height: 350px;
    }
}

.card:before {                                                                            
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 110%;
    background-size: cover;
    background-position: 0 0;
    transition: transform calc(var(--d) * 1.5) var(--e);
    pointer-events: none;
}

.card:after {
    content: "";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 200%;
    pointer-events: none;
    background-image: linear-gradient(to bottom,
            rgba(0, 0, 0, 0) 0%,
            rgba(0, 0, 0, 0.009) 11.7%,
            rgba(0, 0, 0, 0.034) 22.1%,
            rgba(0, 0, 0, 0.072) 31.2%,
            rgba(0, 0, 0, 0.123) 39.4%,
            rgba(0, 0, 0, 0.182) 46.6%,
            rgba(0, 0, 0, 0.249) 53.1%,
            rgba(0, 0, 0, 0.32) 58.9%,
            rgba(0, 0, 0, 0.394) 64.3%,
            rgba(0, 0, 0, 0.468) 69.3%,
            rgba(0, 0, 0, 0.54) 74.1%,
            rgba(0, 0, 0, 0.607) 78.8%,
            rgba(0, 0, 0, 0.668) 83.6%,
            rgba(0, 0, 0, 0.721) 88.7%,
            rgba(0, 0, 0, 0.762) 94.1%,
            rgba(0, 0, 0, 0.79) 100%);
    transform: translateY(-50%);
    transition: transform calc(var(--d) * 2) var(--e);
}

.card:nth-child(1):before {
    background-image: url(Mountain.jpeg);
}

.card:nth-child(2):before {
    background-image: url(Beach.jpeg);
}

.card:nth-child(3):before {
    background-image: url(Desert.jpeg);
}

.card:nth-child(4):before {
    background-image: url(Galaxy.jpeg);
}

.content {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    padding: 1rem;
    transition: transform var(--d) var(--e);
    z-index: 1;
}

.content>*+* {
    margin-top: 1rem;
}

.title {
    font-size: 1.3rem;
    font-weight: bold;
    line-height: 1.2;
}

.copy {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-style: italic;
    line-height: 1.35;
}

.btn {
    cursor: pointer;
    margin-top: 1.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.65rem;
    font-weight: bold;
    letter-spacing: 0.025rem;
    text-transform: uppercase;
    color: white;
    background-color: black;
    border: none;
}

.btn:hover {                                                                               
    background-color: #0d0d0d;
}

.btn:focus {
    outline: 1px dashed yellow;
    outline-offset: 3px;
}

@media (hover: hover) and (min-width: 600px) {
    .card:after {
        transform: translateY(0);
    }

    .content {
        transform: translateY(calc(100% - 4.5rem));
    }

    .content>*:not(.title) {
        opacity: 0;
        transform: translateY(1rem);
        transition: transform var(--d) var(--e), opacity var(--d) var(--e);
    }

    .card:hover,
    .card:focus-within {
        align-items: center;
    }

    .card:hover:before,
    .card:focus-within:before {
        transform: translateY(-4%);
    }

    .card:hover:after,
    .card:focus-within:after {
        transform: translateY(-50%);
    }

    .card:hover .content,
    .card:focus-within .content {
        transform: translateY(0);
    }

    .card:hover .content>*:not(.title),
    .card:focus-within .content>*:not(.title) {
        opacity: 1;
        transform: translateY(0);
        transition-delay: calc(var(--d) / 8);
    }

    .card:focus-within:before,
    .card:focus-within:after,
    .card:focus-within .content,
    .card:focus-within .content>*:not(.title) {
        transition-duration: 0s;
    }
}