jquery 下拉框样式

<div class="custom-select">
  <select>
    <option value="0">请选择</option>
    <option value="1">选项一</option>
    <option value="2">选项二</option>
    <option value="3">选项三</option>
  </select>
</div>

.custom-select {
  position: relative;
  width: 200px;
}

.custom-select select {
  display: none; /* 隐藏原生的select元素 */
}

.select-selected {
  background-color: #fff;
  border: 1px solid #ccc;
  padding: 8px 16px;
  cursor: pointer;
}

.select-selected:after {
  position: absolute;
  content: "";
  top: 14px;
  right: 10px;
  width: 0;
  height: 0;
  border: solid black;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
}

.select-selected.select-arrow-active:after {
  border-color: black transparent transparent transparent;
  top: 7px;
}

.select-items div, .select-selected {
  color: black;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-color: transparent transparent rgba(0, 0, 0, 0.1) transparent;
  cursor: pointer;
}

.select-items {
  position: absolute;
  background-color: #fff;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 99;
}

.select-hide {
  display: none;
}

.select-items div:hover, same-as-selected {
  background-color: rgba(0, 0, 0, 0.1);
}

$(document).ready(function() {
  $(".custom-select select").change(function() {
    var selectedOption = $(this).find("option:selected").text();
    $(this).siblings(".select-selected").text(selectedOption);
  });
});