border-radius()
  -webkit-border-radius arguments
  -moz-border-radius arguments
  border-radius arguments

form input[type=button]
  border-radius 5px
  
  
support-for-ie ?= true

    opacity(n)
      opacity n
      if support-for-ie
        filter unquote('progid:DXImageTransform.Microsoft.Alpha(Opacity=' + round(n * 100) + ')')

    #logo
      &:hover
        opacity 0.5
        
/* parente references */
stripe(even = #fff, odd = #eee)
   tr
     background-color odd
     &.even
     &:nth-child(even)
       background-color even
       
 table
   stripe()
   td
     padding 4px 10px

 table#users
   stripe(#303030, #494848)
   td
     color white
     
/* block mixing */
foo()
  .bar
    {block}

+foo()
  width: 10px
  
/* mixing in mixing */
 inline-list()
   li
     display inline

 comma-list()
   inline-list()
   li
     &:after
       content ', '
     &:last-child:after
       content ''

 ul
   comma-list()