Widget:DFP3

<script>

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var mapping1 = googletag.sizeMapping().

 addSize([0, 0], []).
 addSize([1050, 200], [300, 250]). // Desktop
 build();
   googletag.defineSlot('/75830016/wikirefua_desktop_homepage_bottom_300x250', [300, 250], 'div-gpt-ad-1545206018071-0').defineSizeMapping(mapping1).addService(googletag.pubads());
   googletag.pubads().enableSingleRequest();
   googletag.pubads().collapseEmptyDivs();
   googletag.pubads().setTargeting('search', []).setTargeting('expertise', []).setTargeting('url', []).setTargeting('validation', []);
   googletag.enableServices();

googletag.display('div-gpt-ad-1545206018071-0');

 });

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