diff --git a/packages/react-bootstrap-table2/package.json b/packages/react-bootstrap-table2/package.json
index 61e0c18..f6c22a5 100644
--- a/packages/react-bootstrap-table2/package.json
+++ b/packages/react-bootstrap-table2/package.json
@@ -37,6 +37,7 @@
   ],
   "dependencies": {
     "classnames": "2.2.5",
+    "react-transition-group": "2.5.3",
     "underscore": "1.9.1"
   },
   "peerDependencies": {
diff --git a/packages/react-bootstrap-table2/src/contexts/row-expand-context.js b/packages/react-bootstrap-table2/src/contexts/row-expand-context.js
index 9c038ab..601c338 100644
--- a/packages/react-bootstrap-table2/src/contexts/row-expand-context.js
+++ b/packages/react-bootstrap-table2/src/contexts/row-expand-context.js
@@ -10,18 +10,31 @@ class RowExpandProvider extends React.Component {
     children: PropTypes.node.isRequired,
     data: PropTypes.array.isRequired,
     keyField: PropTypes.string.isRequired
-  }
+  };
 
-  state = { expanded: this.props.expandRow.expanded || [] };
+  state = { expanded: this.props.expandRow.expanded || [],
+    isClosing: this.props.expandRow.isClosing || [] };
 
   componentWillReceiveProps(nextProps) {
     if (nextProps.expandRow) {
+      const isClosing = this.state.expanded.reduce((acc, cur) => {
+        if (!nextProps.expandRow.expanded.includes(cur)) {
+          acc.push(cur);
+        }
+        return acc;
+      }, []);
+      this.setState(() => ({ expanded: nextProps.expandRow.expanded, isClosing }));
+    } else {
       this.setState(() => ({
-        expanded: nextProps.expandRow.expanded || this.state.expanded
+        expanded: this.state.expanded
       }));
     }
   }
 
+  onClosed = (closedRow) => {
+    this.setState({ isClosing: this.state.isClosing.filter(value => value !== closedRow) });
+  };
+
   handleRowExpand = (rowKey, expanded, rowIndex, e) => {
     const { data, keyField, expandRow: { onExpand, onlyOneExpanding, nonExpandable } } = this.props;
     if (nonExpandable && nonExpandable.includes(rowKey)) {
@@ -29,11 +42,15 @@ class RowExpandProvider extends React.Component {
     }
 
     let currExpanded = [...this.state.expanded];
+    let isClosing = [...this.state.isClosing];
 
     if (expanded) {
-      if (onlyOneExpanding) currExpanded = [rowKey];
-      else currExpanded.push(rowKey);
+      if (onlyOneExpanding) {
+        isClosing = isClosing.concat(currExpanded);
+        currExpanded = [rowKey];
+      } else currExpanded.push(rowKey);
     } else {
+      isClosing.push(rowKey);
       currExpanded = currExpanded.filter(value => value !== rowKey);
     }
 
@@ -41,8 +58,8 @@ class RowExpandProvider extends React.Component {
       const row = dataOperator.getRowByRowId(data, keyField, rowKey);
       onExpand(row, expanded, rowIndex, e);
     }
-    this.setState(() => ({ expanded: currExpanded }));
-  }
+    this.setState(() => ({ expanded: currExpanded, isClosing }));
+  };
 
   handleAllRowExpand = (e, expandAll) => {
     const {
@@ -68,7 +85,7 @@ class RowExpandProvider extends React.Component {
     }
 
     this.setState(() => ({ expanded: currExpanded }));
-  }
+  };
 
   render() {
     const { data, keyField } = this.props;
@@ -78,6 +95,8 @@ class RowExpandProvider extends React.Component {
           ...this.props.expandRow,
           nonExpandable: this.props.expandRow.nonExpandable,
           expanded: this.state.expanded,
+          isClosing: this.state.isClosing,
+          onClosed: this.onClosed,
           isAnyExpands: dataOperator.isAnyExpands(data, keyField, this.state.expanded),
           onRowExpand: this.handleRowExpand,
           onAllRowExpand: this.handleAllRowExpand
diff --git a/packages/react-bootstrap-table2/src/row-expand/expand-row.js b/packages/react-bootstrap-table2/src/row-expand/expand-row.js
index 0a89628..3699ada 100644
--- a/packages/react-bootstrap-table2/src/row-expand/expand-row.js
+++ b/packages/react-bootstrap-table2/src/row-expand/expand-row.js
@@ -1,18 +1,37 @@
 import React from 'react';
 import PropTypes from 'prop-types';
+import { CSSTransition } from 'react-transition-group';
 
-const ExpandRow = ({ children, ...rest }) => (
-  <tr className="expanding-row">
-    <td { ...rest }>{ children }</td>
+const ExpandRow = ({ children, expanded, onClosed, ...rest }) => (
+  <tr>
+    <td className="reset-expansion-style" { ...rest }>
+      <CSSTransition
+        appear
+        in={ expanded }
+        timeout={ 400 }
+        classNames="row-expand-slide"
+        onExited={ onClosed }
+      >
+        <div>
+          <div className="row-expansion-style">
+            { children }
+          </div>
+        </div>
+      </CSSTransition>
+    </td>
   </tr>
 );
 
 ExpandRow.propTypes = {
-  children: PropTypes.node
+  children: PropTypes.node,
+  expanded: PropTypes.bool,
+  onClosed: PropTypes.func
 };
 
 ExpandRow.defaultProps = {
-  children: null
+  children: null,
+  expanded: false,
+  onClosed: null
 };
 
 export default ExpandRow;
diff --git a/packages/react-bootstrap-table2/src/row-expand/row-consumer.js b/packages/react-bootstrap-table2/src/row-expand/row-consumer.js
index 7578d6d..724b5d2 100644
--- a/packages/react-bootstrap-table2/src/row-expand/row-consumer.js
+++ b/packages/react-bootstrap-table2/src/row-expand/row-consumer.js
@@ -8,8 +8,8 @@ export default (Component) => {
     const key = props.value;
 
     const expanded = expandRow.expanded.includes(key);
+    const isClosing = expandRow.isClosing.includes(key);
     const expandable = !expandRow.nonExpandable || !expandRow.nonExpandable.includes(key);
-
     return [
       <Component
         { ...props }
@@ -18,9 +18,11 @@ export default (Component) => {
         expandable={ expandable }
         expandRow={ { ...expandRow } }
       />,
-      expanded ? <ExpandRow
+      expanded || isClosing ? <ExpandRow
         key={ `${key}-expanding` }
         colSpan={ props.visibleColumnSize }
+        expanded={ expanded }
+        onClosed={ () => expandRow.onClosed(key) }
       >
         { expandRow.renderer(props.row) }
       </ExpandRow> : null
diff --git a/packages/react-bootstrap-table2/style/react-bootstrap-table2.scss b/packages/react-bootstrap-table2/style/react-bootstrap-table2.scss
index 5974e45..e2a0895 100644
--- a/packages/react-bootstrap-table2/style/react-bootstrap-table2.scss
+++ b/packages/react-bootstrap-table2/style/react-bootstrap-table2.scss
@@ -68,10 +68,6 @@
     text-align: center;
   }
 
-  tr.expanding-row {
-    padding: 5px;
-  }
-
   td.react-bootstrap-table-editing-cell {
     .animated {
       animation-fill-mode: both;
@@ -161,4 +157,26 @@
       animation-name: bounceOut;
     }
   }
-}
\ No newline at end of file
+  .reset-expansion-style{
+    padding: 0;
+  }
+  .row-expansion-style{
+    padding: 8px;
+  }
+  .row-expand-slide-appear{
+    max-height: 0;
+    overflow: hidden;
+  }
+  .row-expand-slide-appear-active{
+    max-height: 1000px;
+    transition: max-height 3s linear;
+  }
+  .row-expand-slide-exit{
+    max-height: 1000px;
+  }
+  .row-expand-slide-exit-active{
+    max-height: 0;
+    overflow: hidden;
+    transition: max-height 400ms cubic-bezier(0, 0.95, 0, 0.95)
+  }
+}