すまんミスった
@-moz-document url("chrome://browser/content/browser.xul"){
.searchbar-textbox .textbox-input-box{
-moz-box-ordinal-group: 1 !important;
}
.searchbar-textbox box{
-moz-box-ordinal-group: 2 !important;
}
.searchbar-textbox .search-go-container{
-moz-box-ordinal-group: 3 !important;
}
}