These are some helpful commands that you will be able to use when writing your own cascading style sheets for your web page.
font-size: gives the size of the font
color: gives color of font
font-family: style of font you want (Times New Roman, Courier, Verdana, etc.)
font-style: use this if you want to put it in italic
font-weight: use this if you want to bold something
There are more commands which you can learn as you get more advanced in the use of style sheets, these should be enough to get you started. CSS is a great way to make your web pages more unique and powerful, and speed up the process of creating them.