diff --git a/activate_gnome@isjerryxiao/extension.js b/activate_gnome@isjerryxiao/extension.js
index 755f6f4..7724282 100644
--- a/activate_gnome@isjerryxiao/extension.js
+++ b/activate_gnome@isjerryxiao/extension.js
@@ -35,12 +35,16 @@ class Extension {
         let text2 = this.settings_get('get_string', 'text-l2')
         let vl2 = this.settings_get('get_double', 'l2-vertical')
         let hl2 = this.settings_get('get_double', 'l2-horizontal')
+        let size1 = parseInt(this.settings_get('get_double', 'size-l1'))
+        let size2 = parseInt(this.settings_get('get_double', 'size-l2'))
         let opacity = this.settings_get('get_double', 'opacity')
 
         this.cleanup()
         for (let monitor of Main.layoutManager.monitors) {
             let label_1 = new St.Label({style_class: 'label-1', text: text1, opacity})
             let label_2 = new St.Label({style_class: 'label-2', text: text2, opacity})
+            label_1.set_style(`font-size: ${size1}px`)
+            label_2.set_style(`font-size: ${size2}px`)
             Main.layoutManager.uiGroup.add_actor(label_2, {"trackFullscreen": false})
             Main.layoutManager.uiGroup.add_actor(label_1, {"trackFullscreen": false})
             this.labels.push(label_1)
diff --git a/activate_gnome@isjerryxiao/prefs.js b/activate_gnome@isjerryxiao/prefs.js
index 7483c7b..3edd95f 100644
--- a/activate_gnome@isjerryxiao/prefs.js
+++ b/activate_gnome@isjerryxiao/prefs.js
@@ -21,102 +21,138 @@ function buildPrefsWidget() {
     })
 
     // line 1
-    let l1label = new Gtk.Label({
+    let label_line_1 = new Gtk.Label({
         label: '<b>Line 1</b>',
         margin_top: 6,
         use_markup: true,
     })
-    prefsWidget.append(l1label)
+    prefsWidget.append(label_line_1)
 
-    let l1entry = new Gtk.Entry({
+    let entry_line_1 = new Gtk.Entry({
         margin_top: 6,
         hexpand: true,
     })
-    l1entry.set_width_chars(30)
-    prefsWidget.append(l1entry)
+    entry_line_1.set_width_chars(30)
+    prefsWidget.append(entry_line_1)
 
     // line 2
-    let l2label = new Gtk.Label({
+    let label_line_2 = new Gtk.Label({
         label: '<b>Line 2</b>',
         margin_top: 6,
         use_markup: true,
     })
-    prefsWidget.append(l2label)
+    prefsWidget.append(label_line_2)
 
-    let l2entry = new Gtk.Entry({
+    let entry_line_2 = new Gtk.Entry({
         margin_top: 6,
         hexpand: true,
     })
-    l2entry.set_width_chars(30)
-    prefsWidget.append(l2entry)
+    entry_line_2.set_width_chars(30)
+    prefsWidget.append(entry_line_2)
 
-    // l2-vertical
-    let vlabel = new Gtk.Label({
+    // line 2 vertical position
+    let label_line_2_vertical_position = new Gtk.Label({
         label: '<b>Vertical Position</b>',
         margin_top: 12,
         use_markup: true,
     })
-    prefsWidget.append(vlabel)
+    prefsWidget.append(label_line_2_vertical_position)
 
-    let ventry = new Gtk.SpinButton({
+    let scale_line_2_vertical_position = new Gtk.Scale({
         adjustment: new Gtk.Adjustment({lower: 0.01, upper: 1.0, step_increment: 0.01, page_increment: 0.1}),
         margin_top: 6,
-        numeric: true,
+        draw_value: false,
         digits: 4,
     })
-    prefsWidget.append(ventry)
+    prefsWidget.append(scale_line_2_vertical_position)
 
-    // l2-horizontal
-    let hlabel = new Gtk.Label({
+    // line 2 horizontal position
+    let label_line_2_horizontal_position = new Gtk.Label({
         label: '<b>Horizontal Position</b>',
         margin_top: 6,
         use_markup: true,
     })
-    prefsWidget.append(hlabel)
+    prefsWidget.append(label_line_2_horizontal_position)
 
-    let hentry = new Gtk.SpinButton({
+    let scale_line_2_horizontal_position = new Gtk.Scale({
         adjustment: new Gtk.Adjustment({lower: 0.01, upper: 1.0, step_increment: 0.01, page_increment: 0.1}),
         margin_top: 6,
-        numeric: true,
+        draw_value: false,
         digits: 4,
     })
-    prefsWidget.append(hentry)
+    prefsWidget.append(scale_line_2_horizontal_position)
+
+    // line 1 text size
+    let label_line_1_text_size = new Gtk.Label({
+        label: '<b>Line 1 Text Size</b>',
+        margin_top: 12,
+        use_markup: true,
+    })
+    prefsWidget.append(label_line_1_text_size)
+
+    let spinbutton_line_1_text_size = new Gtk.SpinButton({
+        adjustment: new Gtk.Adjustment({lower: 1.0, upper: 65535.0, step_increment: 1.0, page_increment: 10.0}),
+        margin_top: 6,
+        numeric: true,
+        digits: 1,
+    })
+    prefsWidget.append(spinbutton_line_1_text_size)
+
+    // line 2 text size
+    let label_line_2_text_size = new Gtk.Label({
+        label: '<b>Line 2 Text Size</b>',
+        margin_top: 6,
+        use_markup: true,
+    })
+    prefsWidget.append(label_line_2_text_size)
+
+    let spinbutton_line_2_text_size = new Gtk.SpinButton({
+        adjustment: new Gtk.Adjustment({lower: 1.0, upper: 65535.0, step_increment: 1.0, page_increment: 10.0}),
+        margin_top: 6,
+        numeric: true,
+        digits: 1,
+    })
+    prefsWidget.append(spinbutton_line_2_text_size)
 
     // opacity
-    let olabel = new Gtk.Label({
+    let label_opacity = new Gtk.Label({
         label: '<b>Opacity</b>',
         margin_top: 6,
         use_markup: true,
     })
-    prefsWidget.append(olabel)
+    prefsWidget.append(label_opacity)
 
-    let oentry = new Gtk.Scale({
+    let scale_opacity = new Gtk.Scale({
         adjustment: new Gtk.Adjustment({lower: 0.1, upper: 255, step_increment: 0.1, page_increment: 1}),
         margin_top: 6,
         draw_value: false,
         digits: 1,
     })
-    prefsWidget.append(oentry)
+    prefsWidget.append(scale_opacity)
 
-    let resetbtn = new Gtk.Button({
+    let button_reset = new Gtk.Button({
         label: 'reset',
         margin_top: 12,
         margin_bottom: 6,
     })
-    resetbtn.connect('clicked', () => {
+    button_reset.connect('clicked', () => {
         this.settings.reset('text-l1')
         this.settings.reset('text-l2')
         this.settings.reset('l2-vertical')
         this.settings.reset('l2-horizontal')
+        this.settings.reset('size-l1')
+        this.settings.reset('size-l2')
         this.settings.reset('opacity')
     })
-    prefsWidget.append(resetbtn)
+    prefsWidget.append(button_reset)
 
-    this.settings.bind('text-l1', l1entry, 'text', Gio.SettingsBindFlags.DEFAULT)
-    this.settings.bind('text-l2', l2entry, 'text', Gio.SettingsBindFlags.DEFAULT)
-    this.settings.bind('l2-vertical', ventry.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
-    this.settings.bind('l2-horizontal', hentry.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
-    this.settings.bind('opacity', oentry.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
+    this.settings.bind('text-l1', entry_line_1, 'text', Gio.SettingsBindFlags.DEFAULT)
+    this.settings.bind('text-l2', entry_line_2, 'text', Gio.SettingsBindFlags.DEFAULT)
+    this.settings.bind('l2-vertical', scale_line_2_vertical_position.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
+    this.settings.bind('l2-horizontal', scale_line_2_horizontal_position.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
+    this.settings.bind('size-l1', spinbutton_line_1_text_size.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
+    this.settings.bind('size-l2', spinbutton_line_2_text_size.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
+    this.settings.bind('opacity', scale_opacity.adjustment, 'value', Gio.SettingsBindFlags.DEFAULT)
 
     return prefsWidget
 }
diff --git a/activate_gnome@isjerryxiao/schemas/org.gnome.shell.extensions.activate_gnome.gschema.xml b/activate_gnome@isjerryxiao/schemas/org.gnome.shell.extensions.activate_gnome.gschema.xml
index 1bfd775..3c792fc 100644
--- a/activate_gnome@isjerryxiao/schemas/org.gnome.shell.extensions.activate_gnome.gschema.xml
+++ b/activate_gnome@isjerryxiao/schemas/org.gnome.shell.extensions.activate_gnome.gschema.xml
@@ -22,5 +22,13 @@
       <default>102</default>
       <summary>Opacity</summary>
     </key>
+    <key name="size-l1" type="d">
+      <default>36</default>
+      <summary>Text size of line 1 (px)</summary>
+    </key>
+    <key name="size-l2" type="d">
+      <default>26</default>
+      <summary>Text size of line 2 (px)</summary>
+    </key>
   </schema>
 </schemalist>
diff --git a/activate_gnome@isjerryxiao/stylesheet.css b/activate_gnome@isjerryxiao/stylesheet.css
index b35cc42..c73d3d7 100644
--- a/activate_gnome@isjerryxiao/stylesheet.css
+++ b/activate_gnome@isjerryxiao/stylesheet.css
@@ -1,13 +1,11 @@
 /* Add your custom extension styling here */
 .label-1 {
-    font-size: 36px;
     font-weight: normal;
     color: rgba(255, 255, 255, 1);
     background-color: rgba(0, 0, 0, 0);
     border-radius: 5px;
 }
 .label-2 {
-    font-size: 26px;
     font-weight: normal;
     color: rgba(255, 255, 255, 1);
     background-color: rgba(0, 0, 0, 0);