FTs now exist in own test files, ea. reliant on base.py to execute

src/functional_tests/test_layout_and_styling.py

@@ -0,0 +1,28 @@
+from selenium.webdriver.common.by import By
+from selenium.webdriver.common.keys import Keys
+
+from .base import FunctionalTest
+
+class LayoutAndStylingTest(FunctionalTest):
+    def test_layout_and_styling(self):
+        self.browser.get(self.live_server_url)
+
+        self.browser.set_window_size(1024, 768)
+        print("Viewport width:", self.browser.execute_script("return window.innerWidth"))
+
+        inputbox = self.browser.find_element(By.ID, 'id-new-item')
+        self.assertAlmostEqual(
+            inputbox.location['x'] + inputbox.size['width'] / 2,
+            512,
+            delta=10,
+        )
+
+        inputbox.send_keys('testing')
+        inputbox.send_keys(Keys.ENTER)
+        self.wait_for_row_in_list_table('1. testing')
+        inputbox = self.browser.find_element(By.ID, 'id-new-item')
+        self.assertAlmostEqual(
+            inputbox.location['x'] + inputbox.size['width'] / 2,
+            512,
+            delta=10,
+        )