Update app.py

app.py

@@ -2,7 +2,7 @@ import panel as pn
 
 
 # Create buttons for the toggleable sidebar
-button1 = pn.widgets.Button(icon = 'home', name="Home", icon_size='2em', width=130, css_classes=['custom-button'])
+button1 = pn.widgets.Button(icon = 'home', name="Home", icon_size='2em', width=130)
 button2 = pn.widgets.Button(icon = 'file-analytics', name='My papers', icon_size='2em', width=130)
 button3 = pn.widgets.Button(icon = 'settings', icon_size='2em', name='Settings', width=130)
 
@@ -23,6 +23,8 @@ filter_list = pn.widgets.CheckButtonGroup(
     options=["option1", "option2", "option3"],
     button_type='success',
     sizing_mode='fixed', 
+    button_style = 'solid',
+    button_type = 'default',
     margin=(5, 10)
 )
 
@@ -45,14 +47,5 @@ template = pn.template.FastListTemplate(
     
 )
 
-# Custom CSS to increase the size of the text inside the "My papers" button
-custom_css = """
-.custom-button .bk.label {
-    font-size: 20px;
-}
-"""
-
-template.add_theme(pn.template.BaseTheme(json=custom_css))
-
 # Run the app
 template.servable()