feat: nas产品体验页

app/index/common.php

@@ -54,11 +54,17 @@ if (!function_exists('style')) {
         if (is_array($styles)) {
             $key = array_keys($styles);
             foreach ($key as $v) {
+                if (empty($styles[$v])){
+                    continue;
+                }
                 $css .= $v . ':' . $styles[$v] . ';';
             }
         } else {
             $css = $styles;
         }
+        if ($css == '') {
+            return '';
+        }
         return 'style="' . $css . '"';
     }
 }