.c-tab {
  margin: 50px auto 0px;
}
.c-tab__list {
  display: flex;
}
.c-tab__item {
  text-align: center;
  width: calc(100% / 3);
  padding: 16px 8px;
  background: #eee;
  cursor: pointer;
  border: 2px solid #e5e5e5;
  border-top: none;
  border-radius: 8px 8px 0 0;
  font-size: 20px;
  color: #7d7d7d;
  font-weight: 700;
  border-top: 8px solid #ccc;
}
.c-tab__content{
  background-color: #ffffff;
  padding: 50px;
  border: 2px solid #e5e5e5;
  border-radius: 0 0 8px 8px;
  border-top: none;
}
.c-tab__item.active {
  background-color: #fff;
  font-weight: 700;
  border: 2px solid #e5e5e5;
  border-bottom: none;
  border-top: 8px solid #3f310c;
  color: #3f310c;
}
.c-tab__content__item {
  display: none;
}
.c-tab__content__item.show {
  display: block;
}

@media screen and (max-width: 768px) {
  .c-tab__content{
    padding: 30px 20px;
  }
.c-tab__item{
  padding: 8px 8px;
  border-radius: 4px 4px 0 0;
  font-size: 16px;
  border-top: 4px solid #ccc;
}
.c-tab__item.active{
  border-top: 4px solid #3f310c;
}
}