CSS Submission is similar to directory submission. It is the submission of website design in websites that provide templates designs and ideas. It is a great way to create backlinks.
Some CSS Submission sites are-
a) http://styletheweb.com
b) http://www.cssdrive.com
c) http://www.cssbeauty.com
d) http://www.cssdsgn.com
e) http://css-design-yorkshire.com
f) http://www.dzinemart.com
g) http://www.divinecss.com
h) http://www.cssstar.com
i) http://www.boxedcss.com
j) http://www.creativeandlink.com
k) http://www.cssgarden.co.uk
l) http://www.cssloggia.com
m) http://www.cssvilla.com
n) http://www.creativesden.com
o) http://welovet3.com