#pop-newsletter {
    background: white;
    padding: 3rem;
    width: 500px;
}

#pop-newsletter h3 {
    margin-top: 0;
    margin-bottom: 0.25rem;
}

.btn.btn-newsletter {
    color: white;
    background-color: #00863c;
    border: none;
    padding: 1rem 2rem;
    border-radius: 3px;
    font-size: 1.25rem;
    transition: all 0.4s ease-in-out;
}

.btn.btn-newsletter:hover, 
.btn.btn-newsletter:active, 
.btn.btn-newsletter:focus {
    color: white;
    background-color: #07783a;
}

#mc_embed_signup {
    background: #fff;
    clear: left;
    width: 600px;
}

#mce-success-response {
    color: olivedrab;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

#mce-error-response {
    color: darkred;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

@media (max-width: 640px) {
    .btn.btn-newsletter {
        transform: scale(0.8);
        transform-origin: left;
    }
}