Sass more variables

sass-more-variables.css

.element {
  font-family: Helvetica, Arial;
  color: #ffffff;
  background-color: #000000;
  border: 1px dashed grey;
}

sass-more-variables.scss

// ----
// Sass (v3.4.9)
// Compass (v1.0.1)
// ----

$black: #000000;
$white: #ffffff;
$grey:  grey;
$default_margin: 1em;
$default_border_style: 1px dashed $grey;
$default_font_style: Helvetica, Arial;

.element {
font-family: $default_font_style;
	color: $white;
	background-color: $black;
	border: $default_border_style;
}