Actually it’s hard to achieve the exact same result as it is custom post type but you can achieve a bit similar result by adding the following CSS code in the Custom CSS code option of your theme on the below path.

Admin Area -> Appearance -> Theme Settings -> Custom Code -> CSS Code

div#wrapper {
    background-image: url(//wordpress1610023.home.pl/autoinstalator/wordpressplus/wp-content/uploads/2016/04/stock-photo-setangi-beach-landscape-398638846.jpg);
    background-color: #262626;
    background-repeat: repeat-x;
}

.content-container.sh-page-layout-default {
    background: transparent;
}