modify logo style

@@ -31,10 +31,10 @@
 
         .index-logo {
             float: left;
-            width: 216px;
+            width: 288px;
             height: 96px;
             background: resolve("yohologo.png") left center no-repeat;
-            background-size: 104PX 25PX;
+            background-size: 280px 60px;
             opacity: 1;
             transition: all 400ms;