Generated by SassMeister.com.

SassMeister-input-HTML.jade

div.buttons
  a.button--general sample
  a.button--important sample
  a.button--navigate sample
  a.button--payment sample

SassMeister-input.scss

// ----
// Sass (v3.3.14)
// Compass (v1.0.0.rc.1)
// MathSass (v0.9.5)
// ----

@import "math";
@function square ($value) {
  @return $value * $value;
}
.sample {
  width: sqrt((square(80 / 2)) * 2);
}

SassMeister-output.css

.sample {
  width: 56.56854;
}

SassMeister-rendered.html

<div class="buttons"><a class="button--general">sample</a><a class="button--important">sample</a><a class="button--navigate">sample</a><a class="button--payment">sample</a></div>