.acd {
  margin-left: auto;
  margin-right: auto;
  max-width: 600px;
  position: relative;
  width: 100%;
}
.acd-title {
  color: #fff;
  cursor: pointer;
  padding: 15px 20px;
}
.acd-content {
  display: none;
  padding: 0 20px 20px 20px;
  line-height: 2;
  color: #fff;
}
.acd-content img {
  width: 36px;
  height: 36px;
  margin: 0px 10px;
}
.acd-content table {
  text-align: center;
  font-size: 80%;
  margin: 5px 0px 15px 0px;
}
.acd-content p {
  line-height: 2.5;
}

/* タイトルの背景色 */
.acd-item {
  background-color: #272726;
}
/* コンテンツボックスの枠線 */
.acd-item {
  border-bottom: 1px solid #F5F5F7;
}
/* 矢印 */
.acd-title {
  position: relative;
}
.acd-title::after {
  border-right: solid 2px #fff;
  border-top: solid 2px #fff;
  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);
}