body {
    align-items: center;
    background: url('../images/background.jpg') no-repeat center center fixed;
    background-size: cover;
    color: #fff;
    display: flex;
    flex-direction: column;
    font-size: 2rem;
    height: 100vh;
    padding: 20px;
    text-align: center;
}

.logo {
    margin-top: 50px;
    max-height: 40vh;
    min-width: 250px;
    width: 50vw;
}

@media (max-width: 768px) {
    body {
        font-size: 1.5rem;
    }

    .logo {
        margin-top: 25px;
    }
}