diff --git a/lib/ng-nest/ui/input/input.component.html b/lib/ng-nest/ui/input/input.component.html
index b85749b8..2e582b41 100644
--- a/lib/ng-nest/ui/input/input.component.html
+++ b/lib/ng-nest/ui/input/input.component.html
@@ -54,6 +54,7 @@
       <input
         #inputRef
         autocomplete="off"
+        class="x-input-frame"
         [class.x-input-has-value-template]="valueTpl()"
         [ngStyle]="inputStyle()"
         [type]="type()"
diff --git a/lib/ng-nest/ui/loading/loading.property.ts b/lib/ng-nest/ui/loading/loading.property.ts
index 01faba09..54c8f897 100644
--- a/lib/ng-nest/ui/loading/loading.property.ts
+++ b/lib/ng-nest/ui/loading/loading.property.ts
@@ -34,17 +34,17 @@ export class XLoadingProperty extends XPropertyFunction(X_LOADING_CONFIG_NAME) {
    * @zh_CN 显示文字，支持自定义模板
    * @en_US Display text, support custom template
    */
-  readonly text = input<XTemplate>(this.config?.text!);
+  readonly text = input<XTemplate | null>(this.config?.text ?? null);
   /**
    * @zh_CN 显示的图标
    * @en_US Icon displayed
    */
-  readonly icon = input<string>(this.config?.icon!);
+  readonly icon = input<string | null>(this.config?.icon ?? null);
   /**
    * @zh_CN 颜色
    * @en_US Color
    */
-  readonly color = input<string>(this.config?.color!);
+  readonly color = input<string | null>(this.config?.color ?? null);
   /**
    * @zh_CN 全屏显示
    * @en_US Full-screen display
@@ -59,5 +59,5 @@ export class XLoadingProperty extends XPropertyFunction(X_LOADING_CONFIG_NAME) {
    * @zh_CN 背景样式
    * @en_US Background style
    */
-  readonly background = input<string>(this.config?.background!);
+  readonly background = input<string | null>(this.config?.background ?? null);
 }