gistfile1.sass

.event.scientific
  color: gray
  padding-left: 20px
  //Add a blue CSS triangle
  //could use any kind of icon or sprite in here too, of course
  &:before
    width: 0px
    height: 0px
    content: ""
    position: absolute
    left: 8px
    border-style: solid
    border-width: 5px 0 5px 10px
    border-color: transparent transparent transparent blue


.event.first-gen
  //Bordered
  +border-radius(5px)
  border: 1px solid black
  padding: 0.2em
  padding-left: 0.3em
  background-color: hsla(0,0,100%, 0.8)