<h1 style="padding-top: 20px;">css customize select box</h1>
<span class="select-fixff">
  <select>
    <option value="001">001</option>
    <option value="002">002</option>
    <option value="003">003</option>
    <option value="004">004</option>
    <option value="005">005</option>
    <option value="006">006</option>
    <option value="007">007</option>
    <option value="008">008</option>
    <option value="009">009</option>
    <option value="010">010</option>
    <option value="011">011</option>
    <option value="012">012</option>
  </select>
</span>
* {
  outline: 0 none;
}
select {
  border: 1px solid #e0e0e0;
  border-radius: 3px;
  padding: 0 5px;
  line-height: 36px;
  height: 36px;
  box-shadow: inset 1px 1px 1px 0px rgba(0, 0, 0, 0.1);
  background: #fff;
  
  width: 150px;  
}
@-moz-document url-prefix() {
  select {
    -moz-appearance: none;
  }
  .select-fixff {
    position: relative;
    display: block;
    float: left;
  }
  .select-fixff:before {
    content: '';
    display: table;
  }
  .select-fixff:after {
    content: " ";
    display: table;
    clear: both;
    right: 8px;
    border: solid transparent;
    height: 0;
    width: 0;
    position: absolute;
    pointer-events: none;
    border-color: #fff;
    border-left-color: #333;
    border-width: 4px;
    top: 50%;
    transform: rotate(90deg);
  }
}

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