html, body {
  margin: 0;
  padding: 0;
}

* {
  box-sizing: border-box;

  &::before, &::after {
    box-sizing: border-box;
  }
}

section {
  /*margin: 0 2rem;*/
  padding: 5rem 2rem;
  background-color: #f1f1f1;
}

.itemorgcstngr img {
  border: 8px solid #fff;
  height: auto;
  width: auto;
  margin:5px auto 5px auto ;
  max-width: 100%;
}

.itemorgcstngr p {
  margin-bottom:3px;
  line-height:1.5rem;
}

.itemorgcstngr .num {
  font-size:0.9rem;
  margin:1rem auto 0.7rem auto;
}

.itemorgcstngr .step {
  font-size:0.9rem;
  font-weight:bold;
}

.itemorgcstngr .ttl {
  font-size:1.1rem;
  /*color:#00f;*/
}

.itemorgcstngr .exp {
  font-size:small;
}

.itemsorgcstngr {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-itemsorgcstngr: center;
}


.itemorgcstngr {
  box-sizing: border-box;
  margin: 0;
  width: calc(33.333333% - 40px / 3);
  margin: 0 10px 10px 0;
  border: 8px solid #f1f1f1;
  text-align:center;
  height:27rem;
  background-color:#fff;
  padding:10px 20px 10px 20px;

  &:nth-child(3n) {
    margin-right: 0;
  }
}

@media screen and (max-width: 768px) {
  .itemorgcstngr img {
    border: 5px solid #fff;
  }

  .itemorgcstngr {
    margin: 0 10px 5px 0;
    width: calc(50% - 10px / 2);

    &:nth-child(2n) {
      margin-right: 0;
    }

    &:nth-child(3n) {
      margin-right: 10px;
    }

    &:nth-child(6n) {
      margin-right: 0;
    }
  }
}