nrwinner

  let w = window.outerWidth;
  let width = Math.ceil(w / Math.cos(ANGLE * Math.PI / 180));
  let height = Math.ceil(w * Math.tan(ANGLE * Math.PI / 180));
  let bottom =  Math.floor((-1) * ((Math.tan(ANGLE * Math.PI / 180) * w) / 2));