add mixin file and take out use variables for images
layout fixes
Merge branch 'berry' into stage
sorting link layout adjustments
Merge branch 'stage' of https://github.com/haoliu119/PreLinked into stage
add underline to links, adjust text sizes
Merge branch 'berry' into stage
Merge branch 'stage' of github.com:haoliu119/PreLinked into stage
Merge branch 'stage' into shao