LESS for CSS is incredible! I’ve been using it on literally everything I do since the beginning of the year.
Dmitry Fadeyev has created a great library of re-useable LESS classes called elements, and I been using it extensively in my work. Elements.less contains a set of re-useable classes and mixins that help you cut down the size of your stylesheets, while speeding up your CSS workflow. I highly recommend checking it out!
Classes in Elements.less
.gradient
.bw-gradient
.bordered
.drop-shadow
.rounded
.border-radius
.opacity
.transition-duration
.rotation
.scale
.transition
.inner-shadow
.box-shadow
.columns
.translate
For more information visit the home of Elements.less.