JSFiddle - React, Tailwind, and code Playground

HTML

<select class="custom-select">
  <option selected>Open this select menu</option>
  <option value="1">One</option>
  <option value="2">Two</option>

</select>

CSS

.custom-select {
  width: 100%;
  font-size: 16px;
    display: inline-block;
    max-width: 100%;
    height: calc(2.25rem + 2px);
    padding: .375rem 1.75rem .375rem .75rem;
    line-height: 1.25;
    color: #464a4c;
    vertical-align: middle;
    background: #fff url("data:image/jpeg;base64,/9j/4QAYRXhpZgAASUkqAAgAAAAAAAAAAAAAAP/sABFEdWNreQABAAQAAAA8AAD/4QMvaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wLwA8P3hwYWNrZXQgYmVnaW49Iu+7vyIgaWQ9Ilc1TTBNcENlaGlIenJlU3pOVGN6a2M5ZCI/PiA8eDp4bXBtZXRhIHhtbG5zOng9ImFkb2JlOm5zOm1ldGEvIiB4OnhtcHRrPSJBZG9iZSBYTVAgQ29yZSA1LjYtYzEzOCA3OS4xNTk4MjQsIDIwMTYvMDkvMTQtMDE6MDk6MDEgICAgICAgICI+IDxyZGY6UkRGIHhtbG5zOnJkZj0iaHR0cDovL3d3dy53My5vcmcvMTk5OS8wMi8yMi1yZGYtc3ludGF4LW5zIyI+IDxyZGY6RGVzY3JpcHRpb24gcmRmOmFib3V0PSIiIHhtbG5zOnhtcD0iaHR0cDovL25zLmFkb2JlLmNvbS94YXAvMS4wLyIgeG1sbnM6eG1wTU09Imh0dHA6Ly9ucy5hZG9iZS5jb20veGFwLzEuMC9tbS8iIHhtbG5zOnN0UmVmPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvc1R5cGUvUmVzb3VyY2VSZWYjIiB4bXA6Q3JlYXRvclRvb2w9IkFkb2JlIFBob3Rvc2hvcCBDQyAyMDE3IChXaW5kb3dzKSIgeG1wTU06SW5zdGFuY2VJRD0ieG1wLmlpZDo3RUI5QzIzQzNFRUYxMUU3QTc3RkVBQjBBRTFFMDM1MiIgeG1wTU06RG9jdW1lbnRJRD0ieG1wLmRpZDo3RUI5QzIzRDNFRUYxMUU3QTc3RkVBQjBBRTFFMDM1MiI+IDx4bXBNTTpEZXJpdmVkRnJvbSBzdFJlZjppbnN0YW5jZUlEPSJ4bXAuaWlkOjdFQjlDMjNBM0VFRjExRTdBNzdGRUFCMEFFMUUwMzUyIiBzdFJlZjpkb2N1bWVudElEPSJ4bXAuZGlkOjdFQjlDMjNCM0VFRjExRTdBNzdGRUFCMEFFMUUwMzUyIi8+IDwvcmRmOkRlc2NyaXB0aW9uPiA8L3JkZjpSREY+IDwveDp4bXBtZXRhPiA8P3hwYWNrZXQgZW5kPSJyIj8+/+4ADkFkb2JlAGTAAAAAAf/bAIQABgQEBAUEBgUFBgkGBQYJCwgGBggLDAoKCwoKDBAMDAwMDAwQDA4PEA8ODBMTFBQTExwbGxscHx8fHx8fHx8fHwEHBwcNDA0YEBAYGhURFRofHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8fHx8f/8AAEQgADAAGAwERAAIRAQMRAf/EAFkAAQEAAAAAAAAAAAAAAAAAAAIIAQEAAAAAAAAAAAAAAAAAAAAAEAAABQMEAwAAAAAAAAAAAAABEQIDBAASMiExExVhUoIRAQAAAAAAAAAAAAAAAAAAAAD/2gAMAwEAAhEDEQA/AKOaflolvujMiqS4KSb5cQSoALb10oHG6ns5hFy3IuPG64Mfsj80H//Z") no-repeat right .75rem center;
    border: 1px solid rgba(0,0,0,.15);
    border-radius: .25rem;
    -moz-appearance: none;
 ...