App shows last 300 lines

app.py

@@ -19,11 +19,9 @@ def log_file_to_html_string():
     console = Console(record=True, width=150)
     with open(log_file, "rt") as f:
         # Seek to the end of the file minus 300 lines
-        f.seek(0, 2)
-        file_size = f.tell()
-        f.seek(max(0, file_size - num_lines_visualize))
         # Read the last 300 lines of the file
         lines = f.readlines()
+        lines = lines[-num_lines_visualize:]
 
         # Syntax-highlight the last 300 lines of the file using the Python lexer and Monokai style
         output = "".join(lines)