diff --git a/src/View/BookEditScreen/book_edit_screen.kv b/src/View/BookEditScreen/book_edit_screen.kv
index 07d8b0a..ec38556 100644
--- a/src/View/BookEditScreen/book_edit_screen.kv
+++ b/src/View/BookEditScreen/book_edit_screen.kv
@@ -25,10 +25,12 @@
 
             BookField:
                 id: title
+                font_size: normal_font
                 hint_text: "Book Title"
 
             BookField:
                 id: author
+                font_size: normal_font
                 hint_text: "Book Author"
 
             MDFillRoundFlatButton:
diff --git a/src/View/LoginScreen/login_screen.kv b/src/View/LoginScreen/login_screen.kv
index 98a6e80..7d61d2c 100644
--- a/src/View/LoginScreen/login_screen.kv
+++ b/src/View/LoginScreen/login_screen.kv
@@ -1,4 +1,4 @@
-<ElevatedCard@MDCard+FakeRectangularElevationBehavior>
+<ElevatedCard@MDCard+CommonElevationBehavior>
     elevation: widget_elevation
     padding: [rel_space]
     spacing: rel_space
diff --git a/src/mainapp.kv b/src/mainapp.kv
index 2c927ef..413b67c 100644
--- a/src/mainapp.kv
+++ b/src/mainapp.kv
@@ -1,10 +1,10 @@
 # Global UI layout dimensions
 #:import Window kivy.core.window.Window
 #:set screen_size (Window.size[0]**2 + Window.size[1]**2)**0.5
-#:set large_font screen_size * 0.04
-#:set normal_font screen_size * 0.02
-#:set rel_space screen_size * 0.01
-#:set list_space screen_size * 0.005
+#:set normal_font dp(18)
+#:set large_font normal_font * 2
+#:set rel_space normal_font / 2
+#:set list_space rel_space / 2
 #:set widget_elevation dp(8)
 
 #:import LoginScreen View.LoginScreen