sass-toolkit/tests/controls/01-clearfix.css

Think of Toolkit as your swiss army knife for modern design and development.

/**
  * Clearfix Mixin
**/
.clearfix {
  _setting--clearfix-extend: false;
}
.clearfix--no-extend {
  _test: "@include clearfix;";
}
.clearfix--no-extend:after {
  content: "";
  display: table;
  clear: both;
}
.clearfix--extend {
  _test: "@include clearfix(true)";
}
.clearfix--extend:after {
  content: "";
  display: table;
  clear: both;
}