.cover {
    color: #ffffff;
    text-align: center;
    width: 100%;
    padding: 25% 0px;
    background-image: url("../img/bg.png");
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
	z-index: 10;
}

@media screen and (max-width: 850px) {
    .cover-tagline {
        margin: 25% 0;
    }
}

@media screen and (max-width: 600px) {
    .cover-tagline {
        margin-top: 75%;
        margin-bottom: 40%;
    }
}