修复背景图片无法显示的问题

Sponsor.html

@@ -15,7 +15,7 @@
 				<div class="loader">正在加载</div>
 			</div>
 		</div>
-		<div class="bg-img"></div>
+		<img id="bg-img" class="bg-img" src="https://bing.shangzhenyang.com/api/1080p" alt="Bing Wallpaper">
 		<div id="list" class="nav_content">
 			<div class="item info">
 				<h2><img alt="Main_icon" class="mainicon" src="/img/icon.svg"/>&nbsp;568Tools&nbsp;|&nbsp;资助</h2>