try to clear all browser caches…
]]>['start-parent-style'] as the dependency argument when you enqueue ‘start-child-style’. Then your equivalent rules will override the parent’s.
There are on occasion one or two stubborn rules where the above doesn’t seem to work. In those cases, adding the rules to the Additional CSS panel of the customizer usually works. If all else fails, add the !important modifier to your problem rule.
wp_enqueue_style( 'start-child-style', get_stylesheet_directory_uri() .'/style.css', ['start-parent-style']);
If your PHP does not recognize the ['array element'] syntax, you really should get your host to update. As a workaround use array('start-parent-style') instead.