Generated by SassMeister.com.

SassMeister-input-HTML.html

<p class="foo">Foo</p>

<p class="bar">Bar</p>

SassMeister-input.scss

// ----
// libsass (v3.2.5)
// ----

%survey-thing {
  color: red;
  padding: 1em;
}

.foo {
  @extend %survey-thing;
  padding: 2em;
}

@mixin survey-thing {
  color: red;
  padding: 1em;
}

.bar {
  @include survey-thing;
  padding: 2em;
}

SassMeister-output.css

.foo {
  color: red;
  padding: 1em;
}

.foo {
  padding: 2em;
}

.bar {
  color: red;
  padding: 1em;
  padding: 2em;
}

SassMeister-rendered.html

<p class="foo">Foo</p>

<p class="bar">Bar</p>