Basic required information when creating a new theme for your website

General requirements

A few general things are usually needed when customizing the way your website looks like:

• typography - font families, common sizes, etc
• color pallete - the preset of colors you will be using across your website  

HTML Body settings

 HTML Body CSS settings are the most basic settings you always need to apply to your theme.

They include:

• Default text font for the whole document - font color, default font size, default font weight (bold) and default font type (yes, you can use also google fonts here)
• Default background color for the whole website
• Links - just like for texts, but links are special elements and require additional settings