@charset "utf-8";
/* CSS for CodePen */
.accordion{
  margin-top: 10px;
}

.accordion__container {
  width: 1050px;
  margin: 0 auto;
}
@media only screen and (max-width: 767px) {
.accordion__container {
  width: 100%;
  margin: 0 auto;
}
}
.accordion__title {
 /* background-color: #fff;
  border: 1px solid transparent;*/
  font-size: 1.25em;
  padding: 8px;
  position: relative;
  cursor: pointer;
  user-select: none;
  height: 52px;
  background-color: #dfdfdf;

}

.accordion__title::before, .accordion__title::after {
  content: '';
  display: block;
  background-color: #000;
  position: absolute;
  top: 25px;
  width: 15px;
  height: 2px;
  right: 25px;
}

.accordion__title::after {
  transform: rotate(90deg);
  transition-duration: .3s;
}

.accordion__title:hover,
.accordion__title:active,
.accordion__title.is-active { 
  /*background-color: #fff;*/
}

.accordion__title.is-active::before {
  opacity: 0;
}

.accordion__title.is-active::after {
  transform: rotate(0);
}

.accordion__content {
  /*border-left: 1px solid transparent;
  border-right: 1px solid transparent;*/
  padding: 8px;
  line-height: 0;
  height: 0;
  overflow: hidden;
  opacity: 0;
  transition-duration: .3s;
}

.accordion__content.is-open {
   /*border: 1px solid #fff;*/
  padding: 8px;
  line-height: normal; /* numberに書き換える*/
  height: auto;
  opacity: 1;
  clear: both;
}