diff --git a/config/config.go b/config/config.go
index 844672a..17fceca 100644
--- a/config/config.go
+++ b/config/config.go
@@ -16,6 +16,7 @@ type config struct {
 	StaticDirectory      string
 	TemplatesGlobPattern string
 	DatabasePath         string
+	CustomCSS            string
 	Logfile              string
 }
 
@@ -41,6 +42,7 @@ func getDefaultConfig() *config {
 		StaticDirectory:      "static",
 		TemplatesGlobPattern: "templates/*",
 		DatabasePath:         "database.db",
+		CustomCSS:            "",
 		Logfile:              "",
 	}
 }
@@ -83,6 +85,8 @@ func Parse(r io.Reader) (c *config, err error) {
 			c.TemplatesGlobPattern = val
 		case "database_path":
 			c.DatabasePath = val
+		case "custom_css":
+			c.CustomCSS = val
 		case "logfile":
 			c.Logfile = val
 		default:
diff --git a/default.conf b/default.conf
index a50ad6f..eede82b 100644
--- a/default.conf
+++ b/default.conf
@@ -4,4 +4,5 @@ client_scope=read write follow
 client_website=http://localhost:8080
 static_directory=static
 templates_glob_pattern=templates/*
+#custom_css=custom.css
 database_path=database
diff --git a/main.go b/main.go
index ad62976..f9fdc8f 100644
--- a/main.go
+++ b/main.go
@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"os"
 	"path/filepath"
+	"strings"
 	"time"
 
 	"web/config"
@@ -52,6 +53,12 @@ func main() {
 	sessionRepo := repository.NewSessionRepository(sessionDB)
 	appRepo := repository.NewAppRepository(appDB)
 
+	customCSS := config.CustomCSS
+	if !strings.HasPrefix(customCSS, "http://") &&
+		!strings.HasPrefix(customCSS, "https://") {
+		customCSS = "/static/" + customCSS
+	}
+
 	var logger *log.Logger
 	if len(config.Logfile) < 1 {
 		logger = log.New(os.Stdout, "", log.LstdFlags)
@@ -64,7 +71,7 @@ func main() {
 		logger = log.New(lf, "", log.LstdFlags)
 	}
 
-	s := service.NewService(config.ClientName, config.ClientScope, config.ClientWebsite, renderer, sessionRepo, appRepo)
+	s := service.NewService(config.ClientName, config.ClientScope, config.ClientWebsite, customCSS, renderer, sessionRepo, appRepo)
 	s = service.NewAuthService(sessionRepo, appRepo, s)
 	s = service.NewLoggingService(logger, s)
 	handler := service.NewHandler(s, config.StaticDirectory)
diff --git a/renderer/model.go b/renderer/model.go
index dfa46b1..4dfac84 100644
--- a/renderer/model.go
+++ b/renderer/model.go
@@ -5,12 +5,24 @@ import (
 	"web/model"
 )
 
+type HeaderData struct {
+	Title             string
+	NotificationCount int
+	CustomCSS         string
+}
+
 type NavbarData struct {
 	User              *mastodon.Account
 	NotificationCount int
 }
 
+type CommonData struct {
+	HeaderData *HeaderData
+	NavbarData *NavbarData
+}
+
 type TimelineData struct {
+	*CommonData
 	Title       string
 	Statuses    []*mastodon.Status
 	HasNext     bool
@@ -18,36 +30,35 @@ type TimelineData struct {
 	HasPrev     bool
 	PrevLink    string
 	PostContext model.PostContext
-	NavbarData  *NavbarData
 }
 
 type ThreadData struct {
+	*CommonData
 	Statuses    []*mastodon.Status
 	PostContext model.PostContext
 	ReplyMap    map[string][]mastodon.ReplyInfo
-	NavbarData  *NavbarData
 }
 
 type NotificationData struct {
+	*CommonData
 	Notifications []*mastodon.Notification
 	HasNext       bool
 	NextLink      string
-	NavbarData    *NavbarData
 }
 
 type UserData struct {
+	*CommonData
 	User       *mastodon.Account
 	Statuses   []*mastodon.Status
 	HasNext    bool
 	NextLink   string
-	NavbarData *NavbarData
 }
 
 type AboutData struct {
-	NavbarData *NavbarData
+	*CommonData
 }
 
 type EmojiData struct {
 	Emojis     []*mastodon.Emoji
-	NavbarData *NavbarData
+	CommonData *CommonData
 }
diff --git a/service/service.go b/service/service.go
index c268b75..ea0d078 100644
--- a/service/service.go
+++ b/service/service.go
@@ -50,18 +50,20 @@ type service struct {
 	clientName    string
 	clientScope   string
 	clientWebsite string
+	customCSS     string
 	renderer      renderer.Renderer
 	sessionRepo   model.SessionRepository
 	appRepo       model.AppRepository
 }
 
 func NewService(clientName string, clientScope string, clientWebsite string,
-	renderer renderer.Renderer, sessionRepo model.SessionRepository,
+	customCSS string, renderer renderer.Renderer, sessionRepo model.SessionRepository,
 	appRepo model.AppRepository) Service {
 	return &service{
 		clientName:    clientName,
 		clientScope:   clientScope,
 		clientWebsite: clientWebsite,
+		customCSS:     customCSS,
 		renderer:      renderer,
 		sessionRepo:   sessionRepo,
 		appRepo:       appRepo,
@@ -272,7 +274,7 @@ func (svc *service) ServeTimelinePage(ctx context.Context, client io.Writer,
 		DefaultVisibility: c.Session.Settings.DefaultVisibility,
 	}
 
-	navbarData, err := svc.getNavbarTemplateData(ctx, client, c)
+	commonData, err := svc.getCommonData(ctx, client, c)
 	if err != nil {
 		return
 	}
@@ -285,7 +287,7 @@ func (svc *service) ServeTimelinePage(ctx context.Context, client io.Writer,
 		HasPrev:     hasPrev,
 		PrevLink:    prevLink,
 		PostContext: postContext,
-		NavbarData:   navbarData,
+		CommonData:  commonData,
 	}
 
 	err = svc.renderer.RenderTimelinePage(ctx, client, data)
@@ -349,7 +351,7 @@ func (svc *service) ServeThreadPage(ctx context.Context, client io.Writer, c *mo
 		addToReplyMap(replyMap, statuses[i].InReplyToID, statuses[i].ID, i+1)
 	}
 
-	navbarData, err := svc.getNavbarTemplateData(ctx, client, c)
+	commonData, err := svc.getCommonData(ctx, client, c)
 	if err != nil {
 		return
 	}
@@ -358,7 +360,7 @@ func (svc *service) ServeThreadPage(ctx context.Context, client io.Writer, c *mo
 		Statuses:    statuses,
 		PostContext: postContext,
 		ReplyMap:    replyMap,
-		NavbarData:  navbarData,
+		CommonData:  commonData,
 	}
 
 	err = svc.renderer.RenderThreadPage(ctx, client, data)
@@ -409,7 +411,7 @@ func (svc *service) ServeNotificationPage(ctx context.Context, client io.Writer,
 		nextLink = "/notifications?max_id=" + pg.MaxID
 	}
 
-	navbarData, err := svc.getNavbarTemplateData(ctx, client, c)
+	commonData, err := svc.getCommonData(ctx, client, c)
 	if err != nil {
 		return
 	}
@@ -418,7 +420,7 @@ func (svc *service) ServeNotificationPage(ctx context.Context, client io.Writer,
 		Notifications: notifications,
 		HasNext:       hasNext,
 		NextLink:      nextLink,
-		NavbarData:    navbarData,
+		CommonData:    commonData,
 	}
 	err = svc.renderer.RenderNotificationPage(ctx, client, data)
 	if err != nil {
@@ -453,7 +455,7 @@ func (svc *service) ServeUserPage(ctx context.Context, client io.Writer, c *mode
 		nextLink = "/user/" + id + "?max_id=" + pg.MaxID
 	}
 
-	navbarData, err := svc.getNavbarTemplateData(ctx, client, c)
+	commonData, err := svc.getCommonData(ctx, client, c)
 	if err != nil {
 		return
 	}
@@ -463,7 +465,7 @@ func (svc *service) ServeUserPage(ctx context.Context, client io.Writer, c *mode
 		Statuses:   statuses,
 		HasNext:    hasNext,
 		NextLink:   nextLink,
-		NavbarData: navbarData,
+		CommonData: commonData,
 	}
 
 	err = svc.renderer.RenderUserPage(ctx, client, data)
@@ -475,13 +477,13 @@ func (svc *service) ServeUserPage(ctx context.Context, client io.Writer, c *mode
 }
 
 func (svc *service) ServeAboutPage(ctx context.Context, client io.Writer, c *model.Client) (err error) {
-	navbarData, err := svc.getNavbarTemplateData(ctx, client, c)
+	commonData, err := svc.getCommonData(ctx, client, c)
 	if err != nil {
 		return
 	}
 
 	data := &renderer.AboutData{
-		NavbarData: navbarData,
+		CommonData: commonData,
 	}
 	err = svc.renderer.RenderAboutPage(ctx, client, data)
 	if err != nil {
@@ -492,7 +494,7 @@ func (svc *service) ServeAboutPage(ctx context.Context, client io.Writer, c *mod
 }
 
 func (svc *service) ServeEmojiPage(ctx context.Context, client io.Writer, c *model.Client) (err error) {
-	navbarData, err := svc.getNavbarTemplateData(ctx, client, c)
+	commonData, err := svc.getCommonData(ctx, client, c)
 	if err != nil {
 		return
 	}
@@ -504,7 +506,7 @@ func (svc *service) ServeEmojiPage(ctx context.Context, client io.Writer, c *mod
 
 	data := &renderer.EmojiData{
 		Emojis:     emojis,
-		NavbarData: navbarData,
+		CommonData: commonData,
 	}
 
 	err = svc.renderer.RenderEmojiPage(ctx, client, data)
@@ -515,27 +517,39 @@ func (svc *service) ServeEmojiPage(ctx context.Context, client io.Writer, c *mod
 	return
 }
 
-func (svc *service) getNavbarTemplateData(ctx context.Context, client io.Writer, c *model.Client) (data *renderer.NavbarData, err error) {
-	notifications, err := c.GetNotifications(ctx, nil)
-	if err != nil {
-		return
+func (svc *service) getCommonData(ctx context.Context, client io.Writer, c *model.Client) (data *renderer.CommonData, err error) {
+	data = new(renderer.CommonData)
+
+	data.HeaderData = &renderer.HeaderData{
+		Title:             "Web",
+		NotificationCount: 0,
+		CustomCSS:         svc.customCSS,
 	}
 
-	var notificationCount int
-	for i := range notifications {
-		if notifications[i].Pleroma != nil && !notifications[i].Pleroma.IsSeen {
-			notificationCount++
+	if c != nil && c.Session.IsLoggedIn() {
+		notifications, err := c.GetNotifications(ctx, nil)
+		if err != nil {
+			return nil, err
 		}
-	}
 
-	u, err := c.GetAccountCurrentUser(ctx)
-	if err != nil {
-		return
-	}
+		var notificationCount int
+		for i := range notifications {
+			if notifications[i].Pleroma != nil && !notifications[i].Pleroma.IsSeen {
+				notificationCount++
+			}
+		}
 
-	data = &renderer.NavbarData{
-		User:              u,
-		NotificationCount: notificationCount,
+		u, err := c.GetAccountCurrentUser(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		data.NavbarData = &renderer.NavbarData{
+			User:              u,
+			NotificationCount: notificationCount,
+		}
+
+		data.HeaderData.NotificationCount = notificationCount
 	}
 
 	return
diff --git a/static/custom.css b/static/custom.css
new file mode 100644
index 0000000..a1c192a
--- /dev/null
+++ b/static/custom.css
@@ -0,0 +1,3 @@
+html {
+	background: #000000;
+}
diff --git a/templates/about.tmpl b/templates/about.tmpl
index 0b4bea0..6038501 100644
--- a/templates/about.tmpl
+++ b/templates/about.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 {{template "navigation.tmpl" .NavbarData}}
 <div class="page-title"> About </div>
 
diff --git a/templates/emoji.tmpl b/templates/emoji.tmpl
index a0cf263..aba4726 100644
--- a/templates/emoji.tmpl
+++ b/templates/emoji.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 {{template "navigation.tmpl" .NavbarData}}
 <div class="page-title"> Emojis </div>
 
diff --git a/templates/error.tmpl b/templates/error.tmpl
index d4bd817..0389cdd 100644
--- a/templates/error.tmpl
+++ b/templates/error.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 <div class="page-title"> Error </div>
 <div class="error-text"> {{.}} </div>
 <div>
diff --git a/templates/header.tmpl b/templates/header.tmpl
index 9334e81..8d05014 100644
--- a/templates/header.tmpl
+++ b/templates/header.tmpl
@@ -3,8 +3,11 @@
 <head>
 	<meta charset='utf-8'>
 	<meta content='width=device-width, initial-scale=1' name='viewport'>
-	<title> Web </title>
-	<link rel="stylesheet" href="/static/main.css" />
+	<title>{{if gt .NotificationCount 0}}({{.NotificationCount}}) {{end}}{{.Title}}</title>
+	<link rel="stylesheet" href="/static/main.css">
+	{{if .CustomCSS}}
+	<link rel="stylesheet" href="{{.CustomCSS}}">
+	{{end}}
 	<link rel="stylesheet" href="/static/fonts/fork-awesome.css">
 </head>
 <body>
diff --git a/templates/homepage.tmpl b/templates/homepage.tmpl
index 63e613a..5e8e8a0 100644
--- a/templates/homepage.tmpl
+++ b/templates/homepage.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 <div class="page-title"> Home </div>
 <a href="/signin"> Signin </a>
 {{template "footer.tmpl"}}
diff --git a/templates/notification.tmpl b/templates/notification.tmpl
index 259328a..c4f6f28 100644
--- a/templates/notification.tmpl
+++ b/templates/notification.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 {{template "navigation.tmpl" .NavbarData}}
 <div class="page-title"> Notifications </div>
 
diff --git a/templates/signin.tmpl b/templates/signin.tmpl
index fb14a66..5dd03f6 100644
--- a/templates/signin.tmpl
+++ b/templates/signin.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 <div class="page-title"> Signin </div>
 
 <form class="signin-form" action="/signin" method="post">
diff --git a/templates/thread.tmpl b/templates/thread.tmpl
index afb307b..7ec0e94 100644
--- a/templates/thread.tmpl
+++ b/templates/thread.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 {{template "navigation.tmpl" .NavbarData}}
 <div class="page-title"> Thread </div>
 
diff --git a/templates/timeline.tmpl b/templates/timeline.tmpl
index 5bff2d0..b688501 100644
--- a/templates/timeline.tmpl
+++ b/templates/timeline.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 {{template "navigation.tmpl" .NavbarData}}
 <div class="page-title"> {{.Title}} </div>
 
diff --git a/templates/user.tmpl b/templates/user.tmpl
index c7aa1e8..fa19338 100644
--- a/templates/user.tmpl
+++ b/templates/user.tmpl
@@ -1,4 +1,4 @@
-{{template "header.tmpl"}}
+{{template "header.tmpl" .HeaderData}}
 {{template "navigation.tmpl" .NavbarData}}
 <div class="page-title"> User </div>