Take a look around line 2567 in your CSS and change auto to cover so it looks like this –
.front-page-1,
.front-page-4,
.front-page-5,
.front-page-7,
.front-page-9,
.front-page-12 {
/* background-attachment: scroll; */
-webkit-background-size: cover;
-moz-background-size: cover;
background-size: cover;
}
This will be fixed in the next update soon.
