:root {
    --grey: hsla(0, 0, 217, 100);
    --nfl-blue: #013369;
    --nfl-red: #d50a0a;
    --nfl-white: #ffffff;
}

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

body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0.5rem;

    display: grid;
    grid-auto-flow: row;
    grid-template-columns: calc(100% - (0.5rem));
    grid-template-rows: 4rem calc(100% - 4rem - 0.5rem);
    gap: 0.5rem;

    background-color: var(--nfl-white);
}

header {
    background-color: var(--nfl-blue);
    padding: 0 1rem;
    border-radius: 1rem;

    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 0.5rem;

    color: var(--nfl-white);
    font-weight: bold;
    font-size: 2rem;
}

header img,
header svg{
    height: 90%;
}

main {
    background-color: var(--nfl-blue);
    border-radius: 1rem;
    overflow-y: scroll;
}

.flip-card__container {
    display: flex;
    flex-direction: row;
    justify-content: space-evenly;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;

    padding: 1rem;
}

.flip-card__card {
    background-color: transparent;
    /*width: 300px;*/
    height: 300px;
    aspect-ratio: 5.71 / 8.89;
    perspective: 1000px;
}

.flip-card__inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.6s;
    transform-style: preserve-3d;
    box-shadow: 0 4px 8px 0 rgba(0, 0, 0, 0.2);
}

.flip-card__card:hover .flip-card__inner {
    transform: rotateY(180deg);
}

.flip-card__front,
.flip-card__back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border: 3px solid white;
}

.flip-card__image {
    width: 100%;
    height: 100%;
}

.flip-card__front {
    background-color: #bbb;
    color: black;
}

.flip-card__back {
    background-color: #2980b9;
    color: white;
    transform: rotateY(180deg);
}