diff --git a/src/MdToHTML.hs b/src/MdToHTML.hs
index 4b3fa83..1c4bba4 100644
--- a/src/MdToHTML.hs
+++ b/src/MdToHTML.hs
@@ -231,6 +231,22 @@ parseSingleNewline = do
     [] -> return $ Unit ""
     _ -> return SingleNewline
 
+parseCssClasses :: Parser [CssClass]
+parseCssClasses = do
+  char '{'
+  classes <- some parseCssClass
+  char '}'
+  return classes
+  where
+    parseCssClass :: Parser CssClass
+    parseCssClass = do
+      char '.'
+      let firstLetterParser = char '_' <|> char '-' <|> label "letter" (satisfy isAlpha)
+      cssClassFirstLetter <- firstLetterParser
+      cssClass <- many (firstLetterParser <|> label "digit" (satisfy isDigit))
+      space
+      return (cssClassFirstLetter : cssClass)
+
 parseImage :: Parser MdToken
 parseImage = do
   char '!'