* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body {
    background: #000;
    color: #fff;
    font-family: sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.logo-heading {
    white-space: nowrap;
    font-size: 5rem;
    margin: 0;
}

.logo-heading span {
    font-size: 2.85rem;
}

.subtitle {
    font-size: 1.5rem;
    margin-top: 1rem;
}

@media (max-width: 305px) {
    .logo-heading {
        font-size: 3rem;
        margin: 0;
    }

    .logo-heading span {
        font-size: 1.71rem;
    }

    .subtitle {
        font-size: 1rem;
        margin-top: 1rem;
    }
}

footer {
    text-align: center;
    font-size: 1rem;
    color: gray;
    padding: 1rem 0;
}