diff --git a/app/src/main/java/com/philliphsu/clock2/BaseActivity.java b/app/src/main/java/com/philliphsu/clock2/BaseActivity.java
index 9b0b19c..2da252a 100644
--- a/app/src/main/java/com/philliphsu/clock2/BaseActivity.java
+++ b/app/src/main/java/com/philliphsu/clock2/BaseActivity.java
@@ -46,6 +46,7 @@ public abstract class BaseActivity extends AppCompatActivity {
             if (ab != null) {
                 ab.setDisplayHomeAsUpEnabled(isDisplayHomeUpEnabled());
                 ab.setDisplayShowTitleEnabled(isDisplayShowTitleEnabled());
+                ab.setElevation(getResources().getDimension(R.dimen.appbar_elevation));
             }
         }
     }
diff --git a/app/src/main/res/values/dimens.xml b/app/src/main/res/values/dimens.xml
index cd17033..3edeef4 100644
--- a/app/src/main/res/values/dimens.xml
+++ b/app/src/main/res/values/dimens.xml
@@ -67,6 +67,8 @@
     <!--EditTimerActivity-->
     <dimen name="field_end_margin">8dp</dimen>
 
+    <dimen name="appbar_elevation">4dp</dimen>
+
     <dimen name="text_size_body_1">14sp</dimen>
     <dimen name="text_size_body_2">14sp</dimen>
     <dimen name="text_size_button">14sp</dimen>