If you want to hide DOM once the search is executed, go to the console to inspect the element and look for the particular command. The code in wizzyCustom.js may look something like this.
window.onWizzyLoaded.push(function () { window.wizzyConfig.events.registerEvent( window.wizzyConfig.events.allowedEvents.BEFORE_INIT, function (payload) { payload.common.lazyDOMConfig.identifiersToHideOnSearch.push("#header-slider") return payload; } ); );