/// Remove the units from a value
///
/// @author Hugo Giraudel
/// @access public
/// @link https://css-tricks.com/snippets/sass/strip-unit-function/
///
/// @param {number} $value - number to remove unit from
///
/// @return {number} - Unitless number
@function strip-unit($value) {
    @return $value / ($value * 0 + 1);
}