app/assets/stylesheets/library/_dimension.sass
=dimension($width: auto, $height: auto)
height: $height
width: $width
=min-dimension($width: none, $height: none)
min-height: $height
min-width: $width
=max-dimension($width: none, $height: none)
max-height: $height
max-width: $width
.limited-width
max-width: 1000px
.limited-width-m
max-width: 600px
.limited-width-s
max-width: 300px