修复获取before的一个小问题

DrissionPage/base.py

@@ -264,8 +264,9 @@ class DrissionElement(BaseElement):
         nodes = [e for e in nodes if not (isinstance(e, str) and sub('[ \n\t\r]', '', e) == '')]
 
         if nodes and index is not None:
+            index = index - 1 if direction == 'following' else -index
             try:
-                return [nodes[index - 1]]
+                return [nodes[index]]
             except IndexError:
                 return []
         else:

setup.py

@@ -6,7 +6,7 @@ with open("README.md", "r", encoding='utf-8') as fh:
 
 setup(
     name="DrissionPage",
-    version="2.4.2",
+    version="2.4.3",
     author="g1879",
     author_email="g1879@qq.com",
     description="A module that integrates selenium and requests session, encapsulates common page operations.",