css change styles in selected pages code example
Example: target wordpress page id
body { background-color: red; }
.page-id-1 body, .page-id-2 body , .page-id-3 body {
background-color: green!important;
}
body { background-color: red; }
.page-id-1 body, .page-id-2 body , .page-id-3 body {
background-color: green!important;
}