css动画仅在元素失去焦点时触发

I´ve got a dropdown field where the user can change values via ajax. When the change-event occurs and the data is saved in the database, the user gets a visual "success-feedback" by making the row which contains the dropdownfield glow green. This works fine so far, but the glow animation (css) fires only if the row loses focus / if i hover out of the row with the mouse (no need to click). I would appreciate any advices; maybe the whole concept of how i´m doing this glow is wrong (putting it in "success" in the ajax-call). I´ve got a dropdown field where the user can ch