打开时尝试更改Bootstrap accordion标题的背景色

<div class="accordion">
  <div class="accordion-item">
    <h2 class="accordion-header">
      <button class="accordion-button custom-title" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne">
        Accordion Title
      </button>
    </h2>
    <div id="collapseOne" class="accordion-collapse collapse">
      <div class="accordion-body">
        Accordion Content
      </div>
    </div>
  </div>
</div>

.custom-title {
  background-color: #ff0000; /* 设置为红色背景 */
  color: #ffffff; /* 设置为白色文字 */
}