div.mainContent img.calender{
  display: block;
  margin: 0 auto 50px;
  width: 100%;
  max-width: 600px;
  height: 100px;
}
div.mainContent section {
  margin-bottom: 80px;
}
div.mainContent section:last-child {
  margin-bottom: 0;
}
div.mainContent ul li{
  display: flex;
  padding: 15px 5px;
  border-bottom: 1px solid #C8C8C8;
}
div.mainContent ul li span{
  margin: 1px 10px 0 0;
  font-size: 12px;
  width: 110px;
}
@media screen and (max-width: 640px) {
  div.mainContent  ul li{
    display: block;
  }
  div.mainContent  ul li span{
    margin: 0 10px 0 0;
    width: 100%;
  }
}