diff --git a/src/PanelContent.tsx b/src/PanelContent.tsx
index d4f7b8d..4608631 100644
--- a/src/PanelContent.tsx
+++ b/src/PanelContent.tsx
@@ -34,15 +34,14 @@ const PanelContent = React.forwardRef<
     <div
       ref={ref}
       className={classnames(
-        `${prefixCls}-content`,
-        customizeClassNames?.content,
+        `${prefixCls}-panel`,
         {
           [`${prefixCls}-content-active`]: isActive,
           [`${prefixCls}-content-inactive`]: !isActive,
         },
         className,
       )}
-      style={{ ...style, ...styles?.content }}
+      style={style}
       role={role}
     >
       <div
diff --git a/src/interface.ts b/src/interface.ts
index baf9b7d..f6ca109 100644
--- a/src/interface.ts
+++ b/src/interface.ts
@@ -39,7 +39,7 @@ export interface CollapseProps {
   items?: ItemType[];
 }
 
-export type SemanticName = 'header' | 'title' | 'body' | 'icon' | 'content';
+export type SemanticName = 'header' | 'title' | 'body' | 'icon';
 export interface CollapsePanelProps extends React.DOMAttributes<HTMLDivElement> {
   id?: string;
   header?: string | React.ReactNode;
diff --git a/tests/index.spec.tsx b/tests/index.spec.tsx
index bc8686e..3b23a22 100644
--- a/tests/index.spec.tsx
+++ b/tests/index.spec.tsx
@@ -866,14 +866,12 @@ describe('collapse', () => {
         body: { color: 'blue' },
         title: { color: 'green' },
         icon: { color: 'yellow' },
-        content: { color: 'purple' },
       };
       const customClassnames = {
         header: 'custom-header',
         body: 'custom-body',
         title: 'custom-title',
         icon: 'custom-icon',
-        content: 'custom-content',
       };
 
       const { container } = render(
@@ -891,21 +889,18 @@ describe('collapse', () => {
       );
       const headerElement = container.querySelector('.rc-collapse-header') as HTMLElement;
       const bodyElement = container.querySelector('.rc-collapse-body') as HTMLElement;
-      const contentElement = container.querySelector('.rc-collapse-content') as HTMLElement;
       const titleElement = container.querySelector('.rc-collapse-title') as HTMLElement;
       const iconElement = container.querySelector('.rc-collapse-expand-icon') as HTMLElement;
 
       // check classNames
       expect(headerElement.classList).toContain('custom-header');
       expect(bodyElement.classList).toContain('custom-body');
-      expect(contentElement.classList).toContain('custom-content');
       expect(titleElement.classList).toContain('custom-title');
       expect(iconElement.classList).toContain('custom-icon');
 
       // check styles
       expect(headerElement.style.color).toBe('red');
       expect(bodyElement.style.color).toBe('blue');
-      expect(contentElement.style.color).toBe('purple');
       expect(titleElement.style.color).toBe('green');
       expect(iconElement.style.color).toBe('yellow');
     });