merged with dev

Author: rydang

package-lock.json

@@ -2,8 +2,6 @@ import React, { Component } from 'react';
 import Slider from 'rc-slider';
 import Tooltip from 'rc-tooltip';
 
-import 'rc-slider/assets/index.css';
-import 'rc-tooltip/assets/bootstrap.css';
 
 const { Handle } = Slider;
 
@@ -32,7 +30,6 @@ class mainSlider extends Component {
 
   render() {
     return (
-      <div>
         <Slider
           min={0}
           max={this.props.snapshotLength - 1}
@@ -44,7 +41,6 @@ class mainSlider extends Component {
           }}
           handle={handle}
         />
-      </div>
     );
   }
 }