fix margin of the bottom of page contents

src/client/js/components/Page.jsx

@@ -134,7 +134,7 @@ class Page extends React.Component {
     const { markdown } = pageContainer.state;
 
     return (
-      <div className={`${isMobile && 'page-mobile'}`}>
+      <div className={`mb-5 ${isMobile ? 'page-mobile' : ''}`}>
         <RevisionRenderer growiRenderer={this.growiRenderer} markdown={markdown} />
 
         { isLoggedIn && (

src/client/js/components/PageComments.jsx

@@ -148,7 +148,7 @@ class PageComments extends React.Component {
     }
 
     return (
-      <div key={commentId} className={`mb-5 ${rootClassNames}`}>
+      <div key={commentId} className={rootClassNames}>
         <Comment
           comment={comment}
           deleteBtnClicked={this.confirmToDeleteComment}