Some updates!

Clocker/Onboarding/OnboardingParentViewController.swift

@@ -69,9 +69,12 @@ class OnboardingParentViewController: NSViewController {
         [negativeButton, backButton].forEach { $0?.isHidden = true }
 
         if #available(OSX 10.16, *) {
-//          negativeButton.controlSize = .large
+            negativeButton.controlSize = .large
-//          positiveButton.controlSize = .large
+            positiveButton.controlSize = .large
-            backButton.image = Themer.shared().symbolImage(for: "chevron.left.circle.fill", "back-button")
+            backButton.image = Themer.shared().symbolImage(for: "chevron.left.circle.fill", accessibilityDescription: "back-button")
+            backButton.bezelStyle = .recessed
+            backButton.isBordered = false
+            backButton.font = NSFont.systemFont(ofSize: 24)
         } else {
             backButton.title = NSLocalizedString("Back",
                                                  comment: "Button title for going back to the previous screen")