查看“Widget:TopBannerPicture”的源代码

<noinclude>用于更改顶部栏图片，使用【pic】参数以指定图片地址</noinclude><includeonly><!--{if !isset($wgTopBannerPicture) || !$wgTopBannerPicture}--><!--{assign var="wgTopBannerPicture" value=true scope="global"}--><!--{if isset($pic) && $pic}--><style>#mw-head{background-image:url(<!--{$pic|escape:'html'}-->);background-size:cover;}</style><!--{/if}--><!--{/if}--></includeonly>