diff --git a/renderer/slide_break.py b/renderer/slide_break.py
index 84bde86..f8f4c04 100644
--- a/renderer/slide_break.py
+++ b/renderer/slide_break.py
@@ -1,4 +1,3 @@
-
 import re
 
 from mistletoe.block_token import BlockToken, tokenize
@@ -7,23 +6,23 @@ from mistletoe.block_token import BlockToken, tokenize
 class SlideBreak(BlockToken):
     @staticmethod
     def start(line):
-        return re.match(r"^\s*---.*$", line)
+        return re.match(r"^---.*$", line)
 
     @classmethod
     def read(cls, lines):
         child_lines = []
-        first_line = next(lines) # Consume the line that started the slide break
+        first_line = next(lines)  # Consume the line that started the slide break
 
-        match = re.match(r"^\s*---\s*(.*)\s*.*$", first_line)
-        attribute = match.group(1) if match.group(1) else None
+        match = re.match(r"^---(.*)$", first_line)
+        attribute = match.group(1).strip() if match.group(1) else None
 
         # We have to work with peak here, since a normal for loop would already
         # consume the next line, which might be a `---` line that marks the
         # beginning of a new slide as well
         next_line = lines.peek()
         while next_line is not None:
-            if re.match(r"^\s*---.*$", next_line) :
-                break 
+            if cls.start(next_line):
+                break
             else:
                 child_lines.append(next(lines))
                 next_line = lines.peek()