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SassMeister-input-HTML.html

<a href="#" class="feature-class">Feature Link</a>
<a href="#" class="feature-class style-class">Feature Style Link</a>

SassMeister-input.scss

// ----
// Sass (v3.3.14)
// Compass (v1.0.1)
// ----

.feature-class {
    color: #0090B2;
    &:hover {
      color: #FF7A00;
    }
    &:active {
      color: #B25500;
    }
    &.style-class {
      color: #00CEFF;
      &:hover {
        color: #0090B2;
      }
      &:active {
        color: #FF7A00;
      }
    }
  }

SassMeister-output.css

.feature-class {
  color: #0090B2;
}
.feature-class:hover {
  color: #FF7A00;
}
.feature-class:active {
  color: #B25500;
}
.feature-class.style-class {
  color: #00CEFF;
}
.feature-class.style-class:hover {
  color: #0090B2;
}
.feature-class.style-class:active {
  color: #FF7A00;
}

SassMeister-rendered.html

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<a href="#" class="feature-class style-class">Feature Style Link</a>