i have used Contact from 7 in my WordPress Theme, there are lot of options but i did not find any option to change the location of the (loading/ spinning arrow).
i want to display loading arrow on the Top of contact from.
This is pretty old but maybe somebody still needs an answer.
To override the ajax loader the right thing to do is to filter out the CF7 php function wpcf7_ajax_loader with a custom one.
Just place this function inside functions.php inside your theme and you should be good.
# Override ajax loader
add_filter('wpcf7_ajax_loader', 'custom_wpcf7_ajax_loader');
function custom_wpcf7_ajax_loader () {
return get_bloginfo('stylesheet_directory') . '/images/custom-ajax-loader.gif';
}