CSS suspenso de seleção personalizada apenas codepen

// custom select dropdown css only codepen
// open the below codepen link for custom select dropdown css only
https://codepen.io/raubaca/pen/VejpQP
https://codepen.io/raubaca/pen/bGWmZje
https://codepen.io/ashepp/pen/jKyBo
Chetan Nada