diff --git a/src/common/containers/App/App.scss b/src/common/containers/App/App.scss
new file mode 100644
index 00000000..0761916f
--- /dev/null
+++ b/src/common/containers/App/App.scss
@@ -0,0 +1,5 @@
+// Scss is written as a case study and a proof of CSS support
+#page-dimmer {
+	z-index: 55 !important;
+	cursor: pointer;
+}
diff --git a/src/common/containers/App/index.jsx b/src/common/containers/App/index.jsx
index 4ecdfbf0..e1c2efb4 100644
--- a/src/common/containers/App/index.jsx
+++ b/src/common/containers/App/index.jsx
@@ -13,9 +13,11 @@ import {TOGGLE_SIDEBAR, WINDOW_RESIZE} from 'actions/layout'
 import {getLayoutState, getLayoutMobileStatuses} from 'selectors'
 import ReactGA from 'react-ga'
 // Import styled components
-import {PageLayout, SidebarSemanticPusherStyled, SidebarSemanticPushable, StyledDimmer} from './style'
-import {Container} from 'semantic-ui-react'
+import {PageLayout, SidebarSemanticPusherStyled, SidebarSemanticPushable} from './style'
+import {Container, Dimmer} from 'semantic-ui-react'
 import _ from 'lodash'
+// Scss is written as a case study and a proof of CSS support
+import './App.scss'
 
 type Props = {
 	children: React$Node,
@@ -82,7 +84,7 @@ class App extends Component<Props> {
 					<Sidebar />
 					<SidebarSemanticPusherStyled sidebar_opened={sidebarOpened ? '1' : ''}>
 						{/* React throws warnings about no "key" prop in this <div> */}
-						<StyledDimmer key={1} {...dimmerProps} />
+						<Dimmer id="page-dimmer" key={1} {...dimmerProps} />
 						<Header />
 						<div className="main-layout">
 							<main className="main-content">
@@ -97,7 +99,7 @@ class App extends Component<Props> {
 	}
 }
 
-const mapStateToProps = (state) => {
+const mapStateToProps = state => {
 	const {sidebarOpened} = getLayoutState(state)
 	const {isMobile} = getLayoutMobileStatuses(state)
 
@@ -107,7 +109,7 @@ const mapStateToProps = (state) => {
 	}
 }
 
-const mapDispatchToProps = (dispatch) => {
+const mapDispatchToProps = dispatch => {
 	let resizer
 	return {
 		toggleSidebar () {
diff --git a/src/common/containers/App/style.jsx b/src/common/containers/App/style.jsx
index dd866583..75abfee7 100644
--- a/src/common/containers/App/style.jsx
+++ b/src/common/containers/App/style.jsx
@@ -1,5 +1,5 @@
 import styled, {css} from 'styled-components'
-import {Dimmer, Sidebar} from 'semantic-ui-react'
+import {Sidebar} from 'semantic-ui-react'
 
 export const SidebarSemanticPushable = Sidebar.Pushable
 export const SidebarSemanticPusherStyled = styled(Sidebar.Pusher)`
@@ -7,12 +7,7 @@ export const SidebarSemanticPusherStyled = styled(Sidebar.Pusher)`
 	-webkit-overflow-scrolling: touch;
 	${({sidebar_opened: sidebarOpened}) => {
 		// `sidebar_opened` attr instead of `media` util -> SSRed app looks better
-		return (
-			sidebarOpened &&
-			css`
-				max-width: calc(100% - 150px);
-			`
-		)
+		return sidebarOpened && css`max-width: calc(100% - 150px);`
 	}};
 `
 
@@ -58,8 +53,3 @@ export const PageLayout = styled.div`
 		}
 	}
 `
-
-export const StyledDimmer = styled(Dimmer)`
-	z-index: 55 !important;
-	cursor: pointer;
-`