/* アコーディオン */
.container_accordion {
  margin: 10px auto 60px;
  width: 100%;
}

.container_accordion h3 {
  font-size: 1.5em;
  font-weight: 500;
  display: inline-block;
  padding: 0 0.4em 0.4em;
  margin-bottom: 20px;
}

@media screen and (max-width: 768px) {
.container_accordion h3 {
	padding: 0 0 0.4em;
	text-align: left;
	display: block;
}
}
	
.accordion .accordion-item {
  border-bottom: 1px solid lightgray;
}
.accordion .accordion-item button[aria-expanded=true] {
  border-bottom: 1px solid #D80C18;
}
.accordion button {
  position: relative;
  display: block;
  text-align: left;
  width: 100%;
  padding: 1em 0;
  color: #313131;
  font-size: 1em;
  font-weight: 400;
  border: none;
  background: none;
  outline: none;
}
.accordion button:hover, .accordion button:focus {
  cursor: pointer;
  color: #D80C18;
}
.accordion button:hover::after, .accordion button:focus::after {
  cursor: pointer;
  color: #D80C18;
  border: 1px solid #D80C18;
}
.accordion button .accordion-title {
  padding: 1em 1.5em 1em 0;
}
.accordion button .icon {
  display: inline-block;
  position: absolute;
  top: 18px;
  right: 0;
  width: 22px;
  height: 22px;
  border: 1px solid;
  border-radius: 22px;
}
.accordion button .icon::before {
  display: block;
  position: absolute;
  content: "";
  top: 9px;
  left: 5px;
  width: 10px;
  height: 2px;
  background: currentColor;
}
.accordion button .icon::after {
  display: block;
  position: absolute;
  content: "";
  top: 5px;
  left: 9px;
  width: 2px;
  height: 10px;
  background: currentColor;
}
.accordion button[aria-expanded=true] {
  color: #D80C18;
}
.accordion button[aria-expanded=true] .icon::after {
  width: 0;
}
.accordion button[aria-expanded=true] + .accordion-content {
  opacity: 1;
  max-height: 21em;
  transition: all 200ms linear;
  will-change: opacity, max-height;
}
.accordion .accordion-content {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 200ms linear, max-height 200ms linear;
  will-change: opacity, max-height;
}
.accordion .accordion-content p {
  font-size: 1rem;
  font-weight: 300;
  margin: 2em 0;
}