#cf_popup {
    position: relative;
    background: #FFF;
    width: auto;
    max-width: 750px;
    margin: 0 auto;
    text-align: center;
    font-size: 18px;
}

.cf-popup-header {
	background: url(http://www.chinfluence.eu/wp-content/uploads/2017/09/background_newsletter.jpg);
    background-size: cover;
    background-color: #000;
    padding: 20px 0;
    color: #FFF;
    text-transform: uppercase;
    font-weight: 800;
    font-size: 24px;
}

.cf-popup-content {
    padding: 50px;
}

.cf-popup-paragraph {
    font-size: 22px;
}

.cf-popup-accept {
    display: block;
    margin-top: 50px;
    margin-bottom: 30px;
    border: 2px solid #000;
    font-weight: bold;
    color: #000;
    text-decoration: none;
    padding: 15px 10px;
    text-transform: uppercase;
}

.cf-popup-accept:hover {
    background-color: #000;
    color: #FFF;
}

.cf-popup-deny {
    display: block;
    color: #000;
    font-size: 16px;
}

.mfp-close-btn-in .mfp-close {
    color: #FFF;
}

@media (max-width: 768px) {
    #cf_popup {
        font-size: 16px;
        margin-left: 20px;
        margin-right: 20px;
        text-align: left;
    }
    .cf-popup-header {
        padding-left: 30px;
        padding-right: 30px;
    }
    .cf-popup-paragraph {
        font-size: 18px;
    }
    .cf-popup-content {
        padding: 30px;
    }
    .cf-popup-accept {
        margin-top: 30px;
        font-size: 16px;
        padding: 10px 15px;
        text-align: center;
    }
    .cf-popup-deny {
        text-align: center;
    }
}