CSS

Link to Google font
Step 1: Find the font here.

Step 2: Use code like this:

The  directive must be the first line of the code.

Stylish
Stylish doesn't appear to support @import directives. So instead:


 * Click "Select this font".
 * For the "# Family Selected", click that.
 * Click Embed.
 * Copy the link href attribute.
 * Copy the CSS out of that page.

Replace an image with another image
For this snippet, imagine the image itself is 16x16px.

"Outline" for text
HTML:

CSS: