select {
  appearance: none;
  margin-block-start: 0.25lh;
  padding-inline-end: 4ch;
  /* chevron-down.svg */
  background-image: url('data: image/svg+xml;base64,PCEtLSBAbGljZW5zZSBsdWNpZGUtc3RhdGljIHYwLjQ3My4wIC0gSVNDIC0tPgo8c3ZnCiAgY2xhc3M9Imx1Y2lkZSBsdWNpZGUtY2hldnJvbi1kb3duIgogIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIKICB3aWR0aD0iMjQiCiAgaGVpZ2h0PSIyNCIKICB2aWV3Qm94PSIwIDAgMjQgMjQiCiAgZmlsbD0ibm9uZSIKICBzdHJva2U9ImN1cnJlbnRDb2xvciIKICBzdHJva2Utd2lkdGg9IjIiCiAgc3Ryb2tlLWxpbmVjYXA9InJvdW5kIgogIHN0cm9rZS1saW5lam9pbj0icm91bmQiCj4KICA8cGF0aCBkPSJtNiA5IDYgNiA2LTYiIC8+Cjwvc3ZnPgo=');
  background-position: calc(100% - 0.5ex) center;
  background-size: 3ex;
  background-repeat: no-repeat;
}