html,
body {
    margin: 0;
    padding: 0;
    background: #4848b8;
    background: linear-gradient(-45deg, #df519d, #4848b8);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    font-size: calc(14px + (26 - 14) * ((100vw - 300px) / (1600 - 300)));
    font-family: Unbounded, sans-serif;
    color: #eee;
}

@keyframes gradient {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

main {
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 3% 1fr 50px;
    grid-column-gap: 0px;
    grid-row-gap: 0px;
}

.content {
    margin: 0 1rem 1rem;
}

h1 {
    font-size: 13vmin;
    margin-bottom: 0;
}

h2 {
    font-size: 5vmin;
    font-weight: 400;
}

@media only screen and (min-width: 767px) {
    h2 {
        max-width: 65%;
    }
}

h3 {
    font-size: 3vmin;
    font-weight: 400;
}

.cards {
    display: flex;
}

.card {
    padding: 1rem;
    background: #fff;
    color: #000;
    border-radius: 20px;
    margin-right: 2rem;
    text-align: center;
}

.footer {
    background: #ccc;
    background: #ccc;
    text-align: center;
    padding: 0.5rem;
    color: #333;
}

@media only screen and (max-width: 767px) {
    main {
        grid-template-rows: 1px 1fr 50px;
    }

    .cards {
        display: block;

    }

    .card {
        text-align: center;
        margin-bottom: 2rem;
        margin-right: 0;
    }

    .footer {
        padding: 1.25rem 0;
    }
}