Make a custom CSS is applied for all the site

1. From Appearance click on “Customize”.
2. Then click on “Additional CSS”.
3. Then put your codes at down are and when finished click on “Publish”.

Make a custom CSS code is applied for one page, post or question

1. Will find this box at each page, post and questions.
2. Click on Custom CSS code at the meta tabs.
3. Add your code and click on “Update”.