diff --git a/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/MarkdownInfoActivity.kt b/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/MarkdownInfoActivity.kt
index 2842a7c..8d06107 100644
--- a/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/MarkdownInfoActivity.kt
+++ b/app/src/main/java/com/wbrawner/simplemarkdown/view/activity/MarkdownInfoActivity.kt
@@ -1,8 +1,10 @@
 package com.wbrawner.simplemarkdown.view.activity
 
+import android.content.res.Configuration
 import android.os.Bundle
 import android.view.MenuItem
 import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.app.AppCompatDelegate
 import com.wbrawner.simplemarkdown.R
 import kotlinx.android.synthetic.main.activity_markdown_info.*
 
@@ -11,7 +13,7 @@ class MarkdownInfoActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_markdown_info)
-        val supportActionBar = supportActionBar
+        setSupportActionBar(toolbar)
         supportActionBar?.setDisplayHomeAsUpEnabled(true)
         val intent = intent
         if (intent == null || !intent.hasExtra("title") || !intent.hasExtra("html")) {
@@ -19,10 +21,18 @@ class MarkdownInfoActivity : AppCompatActivity() {
             return
         }
         title = intent.getStringExtra("title")
+        val isNightMode = AppCompatDelegate.getDefaultNightMode() ==
+                AppCompatDelegate.MODE_NIGHT_YES
+                || resources.configuration.uiMode and Configuration.UI_MODE_NIGHT_MASK == Configuration.UI_MODE_NIGHT_YES
+        val defaultCssId = if (isNightMode) {
+            R.string.pref_custom_css_default_dark
+        } else {
+            R.string.pref_custom_css_default
+        }
+        val css: String? = getString(defaultCssId)
+
         infoWebview.loadDataWithBaseURL(null,
-                String.format(FORMAT_CSS,
-                        getString(R.string.pref_custom_css_default)
-                ) + intent.getStringExtra("html"),
+                String.format(FORMAT_CSS, css) + intent.getStringExtra("html"),
                 "text/html",
                 "UTF-8", null
         )
diff --git a/app/src/main/res/layout/activity_markdown_info.xml b/app/src/main/res/layout/activity_markdown_info.xml
index d06d64c..cadf264 100644
--- a/app/src/main/res/layout/activity_markdown_info.xml
+++ b/app/src/main/res/layout/activity_markdown_info.xml
@@ -1,12 +1,42 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context="com.wbrawner.simplemarkdown.view.activity.MarkdownInfoActivity">
+    tools:context="com.wbrawner.simplemarkdown.view.activity.MarkdownInfoActivity"
+    android:fitsSystemWindows="true"
+    android:clipToPadding="false"
+    android:clipChildren="false">
+
     <WebView
-        android:layout_height="match_parent"
+        android:id="@+id/infoWebview"
         android:layout_width="match_parent"
-        android:id="@+id/infoWebview" />
-</FrameLayout>
+        android:layout_height="match_parent"
+        android:layout_marginBottom="40dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <com.google.android.material.card.MaterialCardView
+        android:id="@+id/bottomSheet"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:translationY="16dp"
+        app:cardCornerRadius="16dp"
+        app:cardElevation="4dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent">
+
+        <androidx.appcompat.widget.Toolbar
+            android:id="@+id/toolbar"
+            android:layout_width="match_parent"
+            android:layout_height="?attr/actionBarSize"
+            android:layout_marginBottom="16dp"
+            android:background="@color/colorBackground" />
+    </com.google.android.material.card.MaterialCardView>
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>