Line Spacing & Paragraph Spacing of Blog page

Hi,
I want to change the line spacing and paragraph spacing on every blog page.
Visit the link below http://www.energysense.in/cigarettes-may-be-gateway-to-marijuana-study/
Its very clumsy and non-professional.
Please advise...

 

Hello,

Paste this code in Custom CSS
Appearance > Theme Option > Styling Option > Custom CSS

Code:

.content-bar .post p {
line-height: 30px;
margin-bottom: 15px;
}

Adjust its value as per your requirements.