code: function setStyles(element, styles) {
    Object.keys(styles).forEach(function (prop) {
      var unit = '';
      // add unit if the value is numeric and is one of the following
      if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
        unit = 'px';
      }
      element.style[prop] = styles[prop] + unit;
    });
  }
docs: Set the style to the given popper
  @method
  @memberof Popper.Utils
  @argument {Element} element - Element to apply the style to
  @argument {Object} styles
  Object with a list of properties and values which will be applied to the element