:root {
    --primary: #0a89ec;
    --background: #ffffff;
    --dark-background: #1f1f1f;
}

html,
body {
    height: 100%;
    margin: 0;
    color: var(--dark-background);
    background-color: var(--background);
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    padding-bottom: 100px;
}

.card {
    width: 24rem;
    border-radius: 5px;
    background-color: var(--background);
    box-shadow: 0 2px 8px rgba(0, 0, 0, .125);
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 200px 10px 10px 10px;
}

picture {
    height: 90px;
}

img {
    height: 160px;
    width: 160px;
    border-radius: 50%;
    border: 0px solid #272133;
    margin-top: 20px;
    box-shadow: 0 10px 50px var(--primary);
    position: relative;
    bottom: 100px;
}

h1 {
    margin-top: 30px;
    margin-bottom: 0;
    font-size: 2em;
}

h2 {
    font-size: 1em;
    font-style: italic;
    opacity: 0.5;
    margin-bottom: 30px;
    max-width: 320px;
    text-align: center;
}

a {
    text-align: center;
    text-decoration: none;
}

.btn {
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1.5;
    font: 600 1.1rem 'Roboto Slab', sans-serif;
    padding: 0.75em 2em;
    letter-spacing: 0.05rem;
    margin: 0.5em;
    width: 13rem;
    border-radius: 5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .125);
    color: var(--primary);
    -webkit-transition: color 0.25s 0.0833333333s;
    transition: color 0.25s 0.0833333333s;
    position: relative;
}

.btn:hover,
.btn:focus {
    box-shadow: 0 2px 8px var(--primary);
}

button {
    margin-top: 30px !important;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: var(--dark-background);
    }

    body {
        color: #ffffff;
        background-color: var(--dark-background);
    }

    .card {
        background-color: var(--dark-background);
        box-shadow: 0 2px 8px rgba(255, 255, 255, .125);
    }

    .btn {
        box-shadow: 0 2px 8px rgba(255, 255, 255, .125);
    }
}