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SassMeister-input.scss

// Sass v3.2.3
// Compass v0.12.2

@import "compass";

#someid {
  $experimental-support-for-svg: true;
  @include background-image(linear-gradient(left, #2ac363, #cd8c14, #9c4cc2));
  width: 80px;
  height: 80px; }

SassMeister-output.css

#someid {
  background-image: url('data:image/svg+xml;base64,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');
  background-size: 100%;
  background-image: -webkit-gradient(linear, 0% 50%, 100% 50%, color-stop(0%, #2ac363), color-stop(50%, #cd8c14), color-stop(100%, #9c4cc2));
  background-image: -webkit-linear-gradient(left, #2ac363, #cd8c14, #9c4cc2);
  background-image: -moz-linear-gradient(left, #2ac363, #cd8c14, #9c4cc2);
  background-image: -o-linear-gradient(left, #2ac363, #cd8c14, #9c4cc2);
  background-image: linear-gradient(left, #2ac363, #cd8c14, #9c4cc2);
  width: 80px;
  height: 80px;
}