design fix for timeline

src/component/Timeline/Timeline.jsx

 
     return (
       <div className='timeline'>
-        <div className={classnames(`${props.customClass}__header`, 'timeline__header')}>
-          Timeline
-        </div>
+        {props.showHeader &&
+          <div className={classnames(`${props.customClass}__header`, 'timeline__header')}>
+            Timeline
+          </div>
+        }
 
         <ul className={classnames(`${props.customClass}__messagelist`, 'timeline__messagelist')}>
           {props.timelineData.map(content => {
   wysiwyg: PropTypes.bool,
   onClickWysiwygBtn: PropTypes.func,
   onClickRevisionBtn: PropTypes.func,
-  shouldScrollToBottom: PropTypes.bool
+  shouldScrollToBottom: PropTypes.bool,
+  showHeader: PropTypes.bool
 }
 
 Timeline.defaultProps = {
   timelineData: [],
   wysiwyg: false,
   onClickWysiwygBtn: () => {},
-  shouldScrollToBottom: true
+  shouldScrollToBottom: true,
+  showHeader: true
 }

src/component/Timeline/Timeline.styl

   flex-direction column
   margin 10px 10px 10px 5px
   border-radius 10px
+  width 100%
   height 100%
   &__header
     flex 0 1 auto