body.boxed.category-51 { background: url(http://hullcitysupporterstrust.com/wp-content/uploads/HCST_Mobile.jpg) no-repeat center center fixed; -webkit-background-size: cover; -moz-background-size: cover;-o-background-size: cover; background-size: cover; }

body.boxed {

background-repeat: no-repeat;
background-attachment: fixed;
background-position: top;
-webkit-background-size: cover; -moz-background-size: cover;-o-background-size: auto; 
background-image: url('http://1904.club/wp-content/uploads/CTWD_Background_2.png');

}