Paste the following code into that box:p { line-height: 300%; }This CSS code tells Tumblr to set the line height of all your paragraphs to 300 percent. You can set this value to anything you like.

How to Put Black Line in CSS. The HR tag enables you to include a gray horizontal rule in your Web page that is useful for dividing sections of data to keep things organized or for aesthetic ...

Created by Russ Weakley of Max Design, this presentation on the CSS line-height property is a great crash course on refining your Web type.