How to make all your Blogger posts have the same formatting

Problem: Some of my posts have small font, some big font, etc. How do I make them all look the same?

Solution: You'll need to edit the css text in Blogger. Step by step directions below::

1. Go into Blogger, go to your blog, click Template

2. Click Customize

3. Click Advanced

4. Scroll all the way down to "Add CSS." You might have to click and use the down arrow.

5. Add something like what you see below.

6. You can cut and paste this if you like:

div
{
font: 16px arial,sans-serif !important; line-height: 150% !important;
}
body
{
font: 16px arial,sans-serif !important; line-height: 150% !important;
}

Explanation:

• font size is set to 16px high, a fairly large font. 
• font is set to Arial
• line spacing is set to 150% or a space and a half to make it easy to read
• "!important" says "override any other individual setting and use this"

Disclaimer:

After a lot of trial and error, I found this did what I needed. It only worked when I set the "div" and set the "body". If you know a better way to do this, please share.