JSFiddle - React, Tailwind, and code Playground

HTML

<div class='form-group-select'>
  <label class='control-label-select'>CENTRO DE CUSTO</label>
  <select name='banco' class='select form_campos_numeros'>
    <option value='1'>custasdasasdasasddsad</option>
    <option value='1'>custo</option>
    <option value='1'>custo</option>
  </select>
</div>

CSS

body {
      font-family: Verdana;
      font-size: 12px;
    }
    
    .form_campos_numeros {
      width: 123px;
    }
    /* SELECT */
    
    .select {
      font-size: 15px;
      height: 31px;
      color: #484848;
      border-radius: 0px;
      border-color: #484848;
      border-style: solid;
      border-bottom-width: 1px;
      border-top-width: 0;
      border-right-width: 0;
      border-left-width: 0;
      -webkit-appearance: none;
      -moz-appearance: none;
      cursor: pointer;
      background: #ffffff;
      outline: none;
      margin-top: 14px;
      background: transparent;
      padding-right: 28px;
    }
    
    select::-ms-expand {
      display: none;
    }
    
    .select:hover,
    .select:focus {
      border-color: #1E90FF;
      border-style: solid;
      border-bottom-width: 1px;
      border-top-width: 0;
      border-right-width: 0;
      border-left-width: 0;
    }
    
    .control-label-select {
      position: absolute;
      transform-origin: left top;
      opacity: 1;
      transform: scale(0.75);
    }
    
    .form-group-select {
      position: relative;
      height: 45px;
      float: left;
      margin-right: 2px;
    }
    
    .form-group-select:after {
      content: "\279C";
      color: #484848;
      transform: rotate(90deg);
      right: 8px;
      top: 22px;
      position: absolute;
      pointer-events: none;
    }
    /* FIM SELECT */