////
/// @group tools/unit-conversion
////

/// Convert pixels to em
///
/// @param {Number} $value - Length in pixels
/// @param {Number} $context-font-size - Font size of element
/// @return {Number} Length in ems
/// @access public

@function tbxforms-em($value, $context-font-size) {
  @if unitless($value) {
    $value: $value * 1px;
  }
  @if unitless($context-font-size) {
    $context-font-size: $context-font-size * 1px;
  }
  @return $value / $context-font-size * 1em;
}