body {
  margin: 0;
}

.gpost {
	background-repeat: no-repeat;
	background-position: center center;
	background-size: cover;
	background-attachment: fixed;
	height: 100vh;
}


@media only screen and (max-device-width: 1024px) {
    .gpost {
        background-attachment: scroll;
    }
}