This is my own tab extension shortcuts for css / less / sass files in TextMate. It makes me type css 5 times faster than in other IDEs ;)
If you're using TextMate 1, install like this
mkdir -p ~/Library/Application\ Support/TextMate/Bundles
cd ~/Library/Application\ Support/TextMate/Bundles
git clone git@github.com:jkneb/CSS.tmBundle.git
If (like me) you're using pre-release TextMate 2, type in those commands in the shell
mkdir -p ~/Library/Application\ Support/Avian/Bundles
cd ~/Library/Application\ Support/Avian/Bundles
git clone git@github.com:jkneb/CSS.tmBundle.git
name=:after tabTrigger=:af
name=:before tabTrigger=:be
name=background-color tabTrigger=bgc
name=background-position tabTrigger=bgp
name=background tabTrigger=bg
name=border-bottom tabTrigger=bob
name=border-left tabTrigger=bol
name=border-radius tabTrigger=br
name=border-right tabTrigger=bor
name=border-top tabTrigger=bot
name=border tabTrigger=bo
name=color tabTrigger=co
name=display tabTrigger=di
name=float tabTrigger=fl
name=font-size tabTrigger=fo
name=font-style tabTrigger=fs
name=font-weight tabTrigger=fw
name=height tabTrigger=he
name=line-height tabTrigger=lh
name=margin-bottom tabTrigger=mab
name=margin-left tabTrigger=mal
name=margin-right tabTrigger=mar
name=margin-top tabTrigger=mat
name=margin tabTrigger=ma
name=outline tabTrigger=ou
name=overflow tabTrigger=ov
name=padding-bottom tabTrigger=pab
name=padding-left tabTrigger=pal
name=padding-right tabTrigger=par
name=padding-top tabTrigger=pat
name=padding tabTrigger=pa
name=position tabTrigger=po
name=text-align tabTrigger=ta
name=text-decoration tabTrigger=td
name=text-indent tabTrigger=ti
name=text-overflow tabTrigger=to
name=text-transform tabTrigger=tt
name=vertical-align tabTrigger=va
name=white-space tabTrigger=ws
name=width tabTrigger=wi
name=z-index tabTrigger=zi