Front End tutorials — Custom elements: create a custom select

One necessity that front end developers often have is to create a custom <select> for their website. I based myself on this excellent tutorial were I learn about this: https://coderwall.com/p/w7npmq/fully-custom-select-box-simple-css-only

HTML

<div class="modal-professional-change-payment-credit-card-date-container">
<select class="modal-professional-change-payment-credit-card-date">
<option>Mastercard</option>
</select>
</div>

CSS

.modal-professional-change-payment-credit-card-date-container {
border: none;
width: 120px;
border-radius: 40px;
overflow: hidden;
background: #f5f5f5 url(prueba.png) right 5px no-repeat;
padding-left: 15px;
padding-right: 15px;
}