fix error

assets/stylesheets/template/layout/content.scss

@@ -271,6 +271,11 @@ body{
   flex: none;
   display: none;
 }
+.box:hover img {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+}
 .box{
   flex: 3;
   color: #666666;