diff --git a/README.md b/README.md
index 166e49b..827287e 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
-# Sending email to your contact list
+## Sending email to your contact list
 this project send email automatically to your contact list
 
-# How to use
+## How to use
 - sending empty massage:
   python sending_gmail.py your-email@gmail.com ./contact.csv 
 - sending simple massage:
@@ -13,15 +13,15 @@ this project send email automatically to your contact list
 - sending custom pdf file:
   python sending_gmail.py your-email@gmail.com ./contact.csv  --cpdf
 
-## for setting subject you have two option:
+### For setting subject you have two option:
 1- write subject in a txt file and use --> --subject_file sub.txt key
 
 2- use --subject_txt key and write subject string directly
 
-## add Custom data for contacts
+### add Custom data for contacts
 1- adding columns with arbitrary names like 'data1' or 'name' and filling every row with related data
 
 2- In the template file, you can use the word \$ column-name \$  for the name of each column.
 for example \$ data1 \$ or \$ name \$
 
-# You can use -h or --help keys also
+### You can use -h or --help keys also