.areaQa {
  margin: 0 auto;
}
.areaQa .qaTab input[type=checkbox] {
  display: none;
}
.areaQa .qaTab {
  padding: 20px 0;
  border-bottom: 1px dotted #cccccc;
}
/*質問テキスト*/
.areaQa label {
  position: relative;
  display: flex;
  align-items: center;
  font-size: 120%;
  width: calc(100% - 70px);
  margin: 0 0 0 50px;
  padding: 10px;
  cursor: pointer;
}
/*＋アイコン*/
.areaQa label::before {
  position: absolute;
  content: '+';
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 210%;
  font-weight: bold;
  margin-left: -50px;
  padding: 0 0 0 0;
  transition: 0.4s ease;
}
.areaQa .qaTab input[type=checkbox]:checked ~ label::before {
  transform: rotate(45deg);
}
/*答えテキスト*/
.areaQa .qaTab-content {
  font-size: 1em;
  position: relative;
  overflow: hidden;
  height: 0;
  margin: 0 40px;
  padding: 0 14px;
  transition: 0.4s ease;
  opacity: 0;
}
.areaQa .qaTab input[type=checkbox]:checked ~ .qaTab-content {
  height: auto;
  padding: 14px;
  opacity: 1;
}