diff --git a/commafeed-client/src/components/content/FeedEntry.tsx b/commafeed-client/src/components/content/FeedEntry.tsx
index 006508b3..e3d488e0 100644
--- a/commafeed-client/src/components/content/FeedEntry.tsx
+++ b/commafeed-client/src/components/content/FeedEntry.tsx
@@ -187,7 +187,7 @@ export function FeedEntry(props: FeedEntryProps) {
                     <Box className={classes.body}>
                         <FeedEntryBody entry={props.entry} />
                     </Box>
-                    <Divider variant="dashed" my={paddingY} />
+                    <Divider variant="dashed" my={paddingY} className="cf-footer-divider" />
                     <FeedEntryFooter entry={props.entry} />
                 </Box>
             )}
diff --git a/commafeed-client/src/components/content/FeedEntryFooter.tsx b/commafeed-client/src/components/content/FeedEntryFooter.tsx
index ad11883b..e5bb7dfe 100644
--- a/commafeed-client/src/components/content/FeedEntryFooter.tsx
+++ b/commafeed-client/src/components/content/FeedEntryFooter.tsx
@@ -37,7 +37,7 @@ export function FeedEntryFooter(props: FeedEntryFooterProps) {
         )
 
     return (
-        <Group justify="space-between">
+        <Group justify="space-between" className="cf-footer">
             <Group gap={spacing}>
                 {props.entry.markable && (
                     <ActionButton
diff --git a/commafeed-client/src/components/content/header/FeedEntryHeader.tsx b/commafeed-client/src/components/content/header/FeedEntryHeader.tsx
index e2028efc..0ffd40ee 100644
--- a/commafeed-client/src/components/content/header/FeedEntryHeader.tsx
+++ b/commafeed-client/src/components/content/header/FeedEntryHeader.tsx
@@ -29,8 +29,8 @@ export function FeedEntryHeader(props: FeedEntryHeaderProps) {
         read: props.entry.read,
     })
     return (
-        <Box>
-            <Flex align="flex-start" justify="space-between">
+        <Box className="cf-header">
+            <Flex align="flex-start" justify="space-between" className="cf-header-title">
                 <Flex align="flex-start" className={classes.main}>
                     {props.showStarIcon && (
                         <Box ml={-5}>
@@ -41,7 +41,7 @@ export function FeedEntryHeader(props: FeedEntryHeaderProps) {
                 </Flex>
                 {props.showExternalLinkIcon && <OpenExternalLink entry={props.entry} />}
             </Flex>
-            <Flex align="center">
+            <Flex align="center" className="cf-header-subtitle">
                 <FeedFavicon url={props.entry.iconUrl} />
                 <Space w={6} />
                 <Box c="dimmed">
@@ -51,7 +51,7 @@ export function FeedEntryHeader(props: FeedEntryHeaderProps) {
                 </Box>
             </Flex>
             {props.expanded && (
-                <Box c="dimmed">
+                <Box className="cf-header-details">
                     {props.entry.author && <span>by {props.entry.author}</span>}
                     {props.entry.author && props.entry.categories && <span>&nbsp;·&nbsp;</span>}
                     {props.entry.categories && <span>{props.entry.categories}</span>}
diff --git a/commafeed-client/src/components/header/Header.tsx b/commafeed-client/src/components/header/Header.tsx
index 0df73531..d6867f41 100644
--- a/commafeed-client/src/components/header/Header.tsx
+++ b/commafeed-client/src/components/header/Header.tsx
@@ -42,11 +42,14 @@ function HeaderToolbar(props: { children: React.ReactNode }) {
                 display: "flex",
                 justifyContent: "space-between",
             }}
+            className="cf-toolbar"
         >
             {props.children}
         </Box>
     ) : (
-        <Group gap={spacing}>{props.children}</Group>
+        <Group gap={spacing} className="cf-toolbar">
+            {props.children}
+        </Group>
     )
 }
 
@@ -75,7 +78,7 @@ export function Header() {
 
     if (!settings) return <Loader />
     return (
-        <Center>
+        <Center className="cf-toolbar-wrapper">
             <HeaderToolbar>
                 <ActionButton
                     icon={<TbArrowUp size={iconSize} />}
diff --git a/commafeed-client/src/components/sidebar/TreeNode.tsx b/commafeed-client/src/components/sidebar/TreeNode.tsx
index f791de8b..17feac9b 100644
--- a/commafeed-client/src/components/sidebar/TreeNode.tsx
+++ b/commafeed-client/src/components/sidebar/TreeNode.tsx
@@ -68,18 +68,18 @@ export function TreeNode(props: TreeNodeProps) {
         <Box
             py={1}
             pl={props.level * 20}
-            className={classes.node}
+            className={`${classes.node} cf-treenode`}
             onClick={(e: React.MouseEvent) => props.onClick(e, props.id)}
             data-id={props.id}
             data-type={props.type}
             data-unread-count={props.unread}
         >
-            <Box mr={6} onClick={(e: React.MouseEvent) => props.onIconClick?.(e, props.id)}>
+            <Box mr={6} onClick={(e: React.MouseEvent) => props.onIconClick?.(e, props.id)} className="cf-treenode-icon">
                 <Center>{typeof props.icon === "string" ? <FeedFavicon url={props.icon} /> : props.icon}</Center>
             </Box>
             <Box className={classes.nodeText}>{props.name}</Box>
             {!props.expanded && (
-                <Box>
+                <Box className="cf-treenode-unread-count">
                     <UnreadCount unreadCount={props.unread} />
                 </Box>
             )}
diff --git a/commafeed-client/src/components/sidebar/UnreadCount.tsx b/commafeed-client/src/components/sidebar/UnreadCount.tsx
index d808af51..63e39235 100644
--- a/commafeed-client/src/components/sidebar/UnreadCount.tsx
+++ b/commafeed-client/src/components/sidebar/UnreadCount.tsx
@@ -18,7 +18,7 @@ export function UnreadCount(props: { unreadCount: number }) {
     const count = props.unreadCount >= 10000 ? "10k+" : props.unreadCount
     return (
         <Tooltip label={props.unreadCount} disabled={props.unreadCount === count} openDelay={Constants.tooltip.delay}>
-            <Badge className={classes.badge} variant="light" fullWidth>
+            <Badge className={`${classes.badge} cf-badge`} variant="light" fullWidth>
                 {count}
             </Badge>
         </Tooltip>
diff --git a/commafeed-client/src/pages/app/Layout.tsx b/commafeed-client/src/pages/app/Layout.tsx
index ef3c99a5..4e23ae72 100644
--- a/commafeed-client/src/pages/app/Layout.tsx
+++ b/commafeed-client/src/pages/app/Layout.tsx
@@ -35,9 +35,16 @@ interface LayoutProps {
 function LogoAndTitle() {
     const dispatch = useAppDispatch()
     return (
-        <Center inline onClick={async () => await dispatch(redirectToRootCategory())} style={{ cursor: "pointer" }}>
-            <Logo size={24} />
-            <Title order={3} pl="md">
+        <Center
+            className="cf-logo-title"
+            inline
+            onClick={async () => await dispatch(redirectToRootCategory())}
+            style={{ cursor: "pointer" }}
+        >
+            <Box className="cf-logo">
+                <Logo size={24} />
+            </Box>
+            <Title order={3} pl="md" className="cf-title">
                 CommaFeed
             </Title>
         </Center>