Add support for contentClass prop

README.md

@@ -152,6 +152,12 @@ If `accordion` is true, only one panel can be open.  Opening another panel will
           <th>' '</th>
           <td>custom className to apply to header</td>
       </tr>
+      <tr>
+          <td>contentClass</td>
+          <td>String</td>
+          <th>' '</th>
+          <td>custom className to apply to content</td>
+      </tr>
       <tr>
           <td>showArrow</td>
           <td>boolean</td>

src/Panel.tsx

@@ -13,6 +13,7 @@ class CollapsePanel extends React.Component<CollapsePanelProps, any> {
     destroyInactivePanel: false,
     onItemClick() {},
     headerClass: '',
+    contentClass: '',
     forceRender: false,
   };
 
@@ -42,6 +43,7 @@ class CollapsePanel extends React.Component<CollapsePanelProps, any> {
       prefixCls,
       header,
       headerClass,
+      contentClass,
       children,
       isActive,
       showArrow,
@@ -85,6 +87,7 @@ class CollapsePanel extends React.Component<CollapsePanelProps, any> {
         </div>
         <Animate showProp="isActive" exclusive component="" animation={this.props.openAnimation}>
           <PanelContent
+            contentClass={contentClass}
             prefixCls={prefixCls}
             isActive={isActive}
             destroyInactivePanel={destroyInactivePanel}

src/PanelContent.tsx

@@ -18,11 +18,20 @@ class PanelContent extends React.Component<CollapsePanelProps, any> {
     if (!this._isActived) {
       return null;
     }
-    const { prefixCls, isActive, children, destroyInactivePanel, forceRender, role } = this.props;
+    const {
+      prefixCls,
+      contentClass,
+      isActive,
+      children,
+      destroyInactivePanel,
+      forceRender,
+      role,
+    } = this.props;
 
     const contentCls = classnames(`${prefixCls}-content`, {
       [`${prefixCls}-content-active`]: isActive,
       [`${prefixCls}-content-inactive`]: !isActive,
+      [contentClass]: contentClass,
     });
 
     const child =

src/interface.ts

@@ -23,6 +23,7 @@ export interface CollapsePanelProps {
   header?: string | React.ReactNode;
   prefixCls?: string;
   headerClass?: string;
+  contentClass?: string;
   showArrow?: boolean;
   className?: string;
   style?: object;