diff --git a/browser/components/MarkdownSplitEditor.js b/browser/components/MarkdownSplitEditor.js
index deb9d89b..af8b0e11 100644
--- a/browser/components/MarkdownSplitEditor.js
+++ b/browser/components/MarkdownSplitEditor.js
@@ -150,7 +150,6 @@ class MarkdownSplitEditor extends React.Component {
         onMouseMove={e => this.handleMouseMove(e)}
         onMouseUp={e => this.handleMouseUp(e)}>
         <CodeEditor
-          styleName='codeEditor'
           ref='code'
           width={this.state.codeEditorWidthInPercent + '%'}
           mode='Boost Flavored Markdown'
@@ -188,7 +187,6 @@ class MarkdownSplitEditor extends React.Component {
         </div>
         <MarkdownPreview
           style={previewStyle}
-          styleName='preview'
           theme={config.ui.theme}
           keyMap={config.editor.keyMap}
           fontSize={config.preview.fontSize}
diff --git a/browser/components/ModalEscButton.js b/browser/components/ModalEscButton.js
index 836c0052..39129d18 100644
--- a/browser/components/ModalEscButton.js
+++ b/browser/components/ModalEscButton.js
@@ -8,7 +8,7 @@ const ModalEscButton = ({
 }) => (
   <button styleName='escButton' onClick={handleEscButtonClick}>
     <div styleName='esc-mark'>×</div>
-    <div styleName='esc-text'>esc</div>
+    <div>esc</div>
   </button>
 )
 
diff --git a/browser/components/SnippetTab.js b/browser/components/SnippetTab.js
index c030351f..d29130c7 100644
--- a/browser/components/SnippetTab.js
+++ b/browser/components/SnippetTab.js
@@ -114,7 +114,7 @@ class SnippetTab extends React.Component {
           >
             {snippet.name.trim().length > 0
               ? snippet.name
-              : <span styleName='button-unnamed'>
+              : <span>
                 {i18n.__('Unnamed')}
               </span>
             }
diff --git a/browser/lib/customMeta.js b/browser/lib/customMeta.js
index 0d4ee1e3..b890cf55 100644
--- a/browser/lib/customMeta.js
+++ b/browser/lib/customMeta.js
@@ -1,5 +1,10 @@
 import CodeMirror from 'codemirror'
 import 'codemirror-mode-elixir'
 
-CodeMirror.modeInfo.push({name: 'Stylus', mime: 'text/x-styl', mode: 'stylus', ext: ['styl'], alias: ['styl']})
+const stylusCodeInfo = CodeMirror.modeInfo.find(info => info.name === 'Stylus')
+if (stylusCodeInfo == null) {
+  CodeMirror.modeInfo.push({name: 'Stylus', mime: 'text/x-styl', mode: 'stylus', ext: ['styl'], alias: ['styl']})
+} else {
+  stylusCodeInfo.alias = ['styl']
+}
 CodeMirror.modeInfo.push({name: 'Elixir', mime: 'text/x-elixir', mode: 'elixir', ext: ['ex']})
diff --git a/browser/main/Detail/FullscreenButton.js b/browser/main/Detail/FullscreenButton.js
index bd76447c..eb33165f 100644
--- a/browser/main/Detail/FullscreenButton.js
+++ b/browser/main/Detail/FullscreenButton.js
@@ -11,7 +11,7 @@ const FullscreenButton = ({
   const hotkey = (OSX ? i18n.__('Command(⌘)') : i18n.__('Ctrl(^)')) + '+B'
   return (
     <button styleName='control-fullScreenButton' title={i18n.__('Fullscreen')} onMouseDown={(e) => onClick(e)}>
-      <img styleName='iconInfo' src='../resources/icon/icon-full.svg' />
+      <img src='../resources/icon/icon-full.svg' />
       <span lang={i18n.locale} styleName='tooltip'>{i18n.__('Fullscreen')}({hotkey})</span>
     </button>
   )
diff --git a/browser/main/Detail/InfoPanel.js b/browser/main/Detail/InfoPanel.js
index 8fe0a855..86b5ae86 100644
--- a/browser/main/Detail/InfoPanel.js
+++ b/browser/main/Detail/InfoPanel.js
@@ -60,7 +60,7 @@ class InfoPanel extends React.Component {
         </div>
 
         <div>
-          <input styleName='infoPanel-noteLink' ref='noteLink' value={noteLink} onClick={(e) => { e.target.select() }} />
+          <input styleName='infoPanel-noteLink' ref='noteLink' defaultValue={noteLink} onClick={(e) => { e.target.select() }} />
           <button onClick={() => this.copyNoteLink()} styleName='infoPanel-copyButton'>
             <i className='fa fa-clipboard' />
           </button>
diff --git a/browser/main/Detail/MarkdownNoteDetail.js b/browser/main/Detail/MarkdownNoteDetail.js
index 9d05d4a3..45024751 100755
--- a/browser/main/Detail/MarkdownNoteDetail.js
+++ b/browser/main/Detail/MarkdownNoteDetail.js
@@ -450,7 +450,7 @@ class MarkdownNoteDetail extends React.Component {
 
     const detailTopBar = <div styleName='info'>
       <div styleName='info-left'>
-        <div styleName='info-left-top'>
+        <div>
           <FolderSelect styleName='info-left-top-folderSelect'
             value={this.state.note.storage + '-' + this.state.note.folder}
             ref='folder'
@@ -484,7 +484,7 @@ class MarkdownNoteDetail extends React.Component {
               onFocus={(e) => this.handleFocus(e)}
               onMouseDown={(e) => this.handleLockButtonMouseDown(e)}
             >
-              <img styleName='iconInfo' src={imgSrc} />
+              <img src={imgSrc} />
               {this.state.isLocked ? <span styleName='tooltip'>Unlock</span> : <span styleName='tooltip'>Lock</span>}
             </button>
 
diff --git a/browser/main/Detail/PermanentDeleteButton.js b/browser/main/Detail/PermanentDeleteButton.js
index fa00ef17..7c27ede1 100644
--- a/browser/main/Detail/PermanentDeleteButton.js
+++ b/browser/main/Detail/PermanentDeleteButton.js
@@ -10,7 +10,7 @@ const PermanentDeleteButton = ({
   <button styleName='control-trashButton--in-trash'
     onClick={(e) => onClick(e)}
   >
-    <img styleName='iconInfo' src='../resources/icon/icon-trash.svg' />
+    <img src='../resources/icon/icon-trash.svg' />
     <span styleName='tooltip'>{i18n.__('Permanent Delete')}</span>
   </button>
 )
diff --git a/browser/main/Detail/SnippetNoteDetail.js b/browser/main/Detail/SnippetNoteDetail.js
index 31a28c35..2ae01082 100644
--- a/browser/main/Detail/SnippetNoteDetail.js
+++ b/browser/main/Detail/SnippetNoteDetail.js
@@ -808,7 +808,7 @@ class SnippetNoteDetail extends React.Component {
 
     const detailTopBar = <div styleName='info'>
       <div styleName='info-left'>
-        <div styleName='info-left-top'>
+        <div>
           <FolderSelect styleName='info-left-top-folderSelect'
             value={this.state.note.storage + '-' + this.state.note.folder}
             ref='folder'
diff --git a/browser/main/Detail/ToggleModeButton.js b/browser/main/Detail/ToggleModeButton.js
index 4d090ead..9d3d61f2 100644
--- a/browser/main/Detail/ToggleModeButton.js
+++ b/browser/main/Detail/ToggleModeButton.js
@@ -8,11 +8,11 @@ const ToggleModeButton = ({
   onClick, editorType
 }) => (
   <div styleName='control-toggleModeButton'>
-    <div styleName={editorType === 'SPLIT' ? 'active' : 'non-active'} onClick={() => onClick('SPLIT')}>
-      <img styleName='item-star' src={editorType === 'EDITOR_PREVIEW' ? '../resources/icon/icon-mode-markdown-off-active.svg' : ''} />
+    <div styleName={editorType === 'SPLIT' ? 'active' : undefined} onClick={() => onClick('SPLIT')}>
+      <img src={editorType === 'EDITOR_PREVIEW' ? '../resources/icon/icon-mode-markdown-off-active.svg' : ''} />
     </div>
-    <div styleName={editorType === 'EDITOR_PREVIEW' ? 'active' : 'non-active'} onClick={() => onClick('EDITOR_PREVIEW')}>
-      <img styleName='item-star' src={editorType === 'EDITOR_PREVIEW' ? '' : '../resources/icon/icon-mode-split-on-active.svg'} />
+    <div styleName={editorType === 'EDITOR_PREVIEW' ? 'active' : undefined} onClick={() => onClick('EDITOR_PREVIEW')}>
+      <img src={editorType === 'EDITOR_PREVIEW' ? '' : '../resources/icon/icon-mode-split-on-active.svg'} />
     </div>
     <span lang={i18n.locale} styleName='tooltip'>{i18n.__('Toggle Mode')}</span>
   </div>
diff --git a/browser/main/Detail/TrashButton.js b/browser/main/Detail/TrashButton.js
index d26be66e..8ca27ce9 100644
--- a/browser/main/Detail/TrashButton.js
+++ b/browser/main/Detail/TrashButton.js
@@ -10,7 +10,7 @@ const TrashButton = ({
   <button styleName='control-trashButton'
     onClick={(e) => onClick(e)}
   >
-    <img styleName='iconInfo' src='../resources/icon/icon-trash.svg' />
+    <img src='../resources/icon/icon-trash.svg' />
     <span lang={i18n.locale} styleName='tooltip'>{i18n.__('Trash')}</span>
   </button>
 )
diff --git a/browser/main/NewNoteButton/index.js b/browser/main/NewNoteButton/index.js
index 115d9530..27e2baa5 100644
--- a/browser/main/NewNoteButton/index.js
+++ b/browser/main/NewNoteButton/index.js
@@ -90,7 +90,7 @@ class NewNoteButton extends React.Component {
         <div styleName='control'>
           <button styleName='control-newNoteButton'
             onClick={this.handleNewNoteButtonClick}>
-            <img styleName='iconTag' src='../resources/icon/icon-newnote.svg' />
+            <img src='../resources/icon/icon-newnote.svg' />
             <span styleName='control-newNoteButton-tooltip'>
               {i18n.__('Make a note')} {OSX ? '⌘' : i18n.__('Ctrl')} + N
             </span>
diff --git a/browser/main/NoteList/index.js b/browser/main/NoteList/index.js
index a146cb6c..17e25a44 100644
--- a/browser/main/NoteList/index.js
+++ b/browser/main/NoteList/index.js
@@ -1138,7 +1138,7 @@ class NoteList extends React.Component {
               }
               onClick={(e) => this.handleListStyleButtonClick(e, 'DEFAULT')}
             >
-              <img styleName='iconTag' src='../resources/icon/icon-column.svg' />
+              <img src='../resources/icon/icon-column.svg' />
             </button>
             <button title={i18n.__('Compressed View')} styleName={config.listStyle === 'SMALL'
                 ? 'control-button--active'
@@ -1146,7 +1146,7 @@ class NoteList extends React.Component {
               }
               onClick={(e) => this.handleListStyleButtonClick(e, 'SMALL')}
             >
-              <img styleName='iconTag' src='../resources/icon/icon-column-list.svg' />
+              <img src='../resources/icon/icon-column-list.svg' />
             </button>
           </div>
         </div>
diff --git a/browser/main/SideNav/PreferenceButton.js b/browser/main/SideNav/PreferenceButton.js
index 187171f4..187bc41a 100644
--- a/browser/main/SideNav/PreferenceButton.js
+++ b/browser/main/SideNav/PreferenceButton.js
@@ -8,7 +8,7 @@ const PreferenceButton = ({
   onClick
 }) => (
   <button styleName='top-menu-preference' onClick={(e) => onClick(e)}>
-    <img styleName='iconTag' src='../resources/icon/icon-setting.svg' />
+    <img src='../resources/icon/icon-setting.svg' />
     <span styleName='tooltip'>{i18n.__('Preferences')}</span>
   </button>
 )
diff --git a/browser/main/SideNav/StorageItem.js b/browser/main/SideNav/StorageItem.js
index 74881b9e..5cd4a491 100644
--- a/browser/main/SideNav/StorageItem.js
+++ b/browser/main/SideNav/StorageItem.js
@@ -362,14 +362,14 @@ class StorageItem extends React.Component {
             <button styleName='header-addFolderButton'
               onClick={(e) => this.handleAddFolderButtonClick(e)}
             >
-              <img styleName='iconTag' src='../resources/icon/icon-plus.svg' />
+              <img src='../resources/icon/icon-plus.svg' />
             </button>
           }
 
           <button styleName='header-info'
             onClick={(e) => this.handleHeaderInfoClick(e)}
           >
-            <span styleName='header-info-name'>
+            <span>
               {isFolded ? _.truncate(storage.name, {length: 1, omission: ''}) : storage.name}
             </span>
             {isFolded &&
@@ -380,7 +380,7 @@ class StorageItem extends React.Component {
           </button>
         </div>
         {this.state.isOpen &&
-          <div styleName='folderList' >
+          <div>
             {folderList}
           </div>
         }
diff --git a/browser/main/modals/PreferencesModal/FolderItem.js b/browser/main/modals/PreferencesModal/FolderItem.js
index e6bd1e37..648db4e6 100644
--- a/browser/main/modals/PreferencesModal/FolderItem.js
+++ b/browser/main/modals/PreferencesModal/FolderItem.js
@@ -225,7 +225,7 @@ class FolderItem extends React.Component {
         <div styleName='folderItem-left'
           style={{borderColor: folder.color}}
         >
-          <span styleName='folderItem-left-name'>{folder.name}</span>
+          <span>{folder.name}</span>
           <span styleName='folderItem-left-key'>({folder.key})</span>
         </div>
         <div styleName='folderItem-right'>
@@ -288,10 +288,10 @@ class Handle extends React.Component {
 
 class SortableFolderItemComponent extends React.Component {
   render () {
-    const StyledHandle = CSSModules(Handle, this.props.styles)
+    const StyledHandle = CSSModules(Handle, styles)
     const DragHandle = SortableHandle(StyledHandle)
 
-    const StyledFolderItem = CSSModules(FolderItem, this.props.styles)
+    const StyledFolderItem = CSSModules(FolderItem, styles)
 
     return (
       <div>
diff --git a/browser/main/modals/PreferencesModal/FolderList.js b/browser/main/modals/PreferencesModal/FolderList.js
index 02f5cee9..674026c5 100644
--- a/browser/main/modals/PreferencesModal/FolderList.js
+++ b/browser/main/modals/PreferencesModal/FolderList.js
@@ -22,7 +22,7 @@ class FolderList extends React.Component {
     })
 
     return (
-      <div styleName='folderList'>
+      <div>
         {folderList.length > 0
           ? folderList
           : <div styleName='folderList-empty'>{i18n.__('No Folders')}</div>
diff --git a/browser/main/modals/PreferencesModal/index.js b/browser/main/modals/PreferencesModal/index.js
index f3fc3751..86957083 100644
--- a/browser/main/modals/PreferencesModal/index.js
+++ b/browser/main/modals/PreferencesModal/index.js
@@ -147,7 +147,7 @@ class Preferences extends React.Component {
           key={tab.target}
           onClick={(e) => this.handleNavButtonClick(tab.target)(e)}
         >
-          <span styleName='nav-button-label'>
+          <span>
             {tab.label}
           </span>
           {isUiHotkeyTab ? this.haveToSaveNotif(tab[tab.label].type, tab[tab.label].message) : null}
diff --git a/lib/main.development.html b/lib/main.development.html
index 38e2cea9..cbcda295 100644
--- a/lib/main.development.html
+++ b/lib/main.development.html
@@ -110,7 +110,6 @@
   <script src="../extra_scripts/boost/boostNewLineIndentContinueMarkdownList.js"></script>
   <script src="../extra_scripts/codemirror/mode/bfm/bfm.js"></script>
   <script src="../extra_scripts/codemirror/addon/hyperlink/hyperlink.js"></script>
-  <script src="../extra_scripts/codemirror/mode/bfm/bfm.js"></script>
 
   <script src="../node_modules/codemirror/addon/edit/closebrackets.js"></script>
   <script src="../node_modules/codemirror/addon/edit/matchbrackets.js"></script>
diff --git a/lib/main.production.html b/lib/main.production.html
index ffd9eec3..cab38981 100644
--- a/lib/main.production.html
+++ b/lib/main.production.html
@@ -105,7 +105,6 @@
   <script src="../extra_scripts/boost/boostNewLineIndentContinueMarkdownList.js"></script>
   <script src="../extra_scripts/codemirror/mode/bfm/bfm.js"></script>
   <script src="../extra_scripts/codemirror/addon/hyperlink/hyperlink.js"></script>
-  <script src="../extra_scripts/codemirror/mode/bfm/bfm.js"></script>
 
   <script src="../node_modules/codemirror/addon/edit/closebrackets.js"></script>
   <script src="../node_modules/codemirror/addon/edit/matchbrackets.js"></script>