Scss Font-Style Mixin

fontstyle.scss

@mixin br-text ( $size: null, $line-h: null, $weight: null ,$c: null, $m: null, $p: null, $f-name: null, $m-b: null,$p-b : null   ){
  @function str-remove-whitespace($str) {
    @while (str-index($str, ' ') != null) {
      $index: str-index($str, ' ');
      $str: "#{str-slice($str, 0, $index - 1)}#{str-slice($str, $index + 1)}";
    }
    @return $str;
  }
  @if($f-name) { font-family: $f-name; }
  @if($size) {
    $_size : quote($size/16 rem);
    font-size: unquote(str-remove-whitespace($_size));
  }
  @if($line-h){
    $line-h : quote($line-h/$size em);
    line-height: unquote(str-remove-whitespace($line-h));
  }
  @if($weight) { font-weight: $weight; }
  @if($c) { color: $c; }
  @if($m) { margin: $m }

  @if($m-b) {
    $m-b : quote($m-b/$size em);
    margin-bottom:  unquote(str-remove-whitespace($m-b));
  }
  @if($p-b) {
    $p-b : quote($p-b/$size em);
    padding-bottom:  unquote(str-remove-whitespace($p-b));
  }
  @if($p) { padding: $p; }
}