.acd {
  margin-left: auto;
  margin-right: auto;
  max-width: 100%;
  position: relative;
  width: 100%;
}
.acd-title {
  color: #004249;
  cursor: pointer;
  padding: 20px 30px;
}
.acd-content {
  display: none;
  padding: 20px 30px;
  color: #000;
  background-color: #fff;
}
.acd-content table {
  margin: 0 10px;
  color: #004249;
}



/* タイトルの背景色 */
.acd-item {
  background-color: #f5f5f7;
}
/* コンテンツボックスの枠線 */
.acd-item {
  border-bottom: 1px solid #004249;
}
/* 矢印 */
.acd-title {
  position: relative;
}
.acd-title::after {
  border-right: solid 2px #004249;
  border-top: solid 2px #004249;
  content: "";
  display: block;
  height: 8px;
  position: absolute;
  right: 25px;
  top: 38%;
  transform: rotate(135deg);
  transition: transform .3s ease-in-out, top .3s ease-in-out;
  width: 8px;
}
.acd-title.open::after {
  top: 45%;
  transform: rotate(-45deg);
}