.project-introduction {
  margin: 56px 0 100px 0;
}

@media screen and (max-width: 479px) {
  .project-introduction {
    margin: 50px 0 100px 0;
  }
}

.project-introduction__row:nth-child(2) {
  margin-bottom: 100px
}

.project-introduction__row__content {
  display: flex;
  flex-wrap: wrap;
}

@media screen and (max-width: 479px) {
  .project-introduction__row__content {
    align-items: flex-start;
  }
}

.project-introduction__row__content__img {
  width: 470px;
  height: 362px;
}

@media screen and (max-width: 479px) {
  .project-introduction__row__content__img {
    width: 100%;
    height: auto;
  }
}

.project-introduction__row__content__details {
  width: 670px;
}

@media screen and (max-width: 479px) {
  .project-introduction__row__content__details {
    width: auto;
  }
}

@media screen and (max-width: 479px) {
  .project-introduction__row__content__details .c-header__details:nth-child(2) {
    margin-bottom: 10px;
  }
}

.project-introduction__row__content__img.is-left { order: 1; margin-right: 30px; }
.project-introduction__row__content__img.is-right { order: 2; }
.project-introduction__row__content__details.is-left { order: 1; margin-right: 30px; }
.project-introduction__row__content__details.is-right { order: 2; }

@media screen and (max-width: 479px) {
  .project-introduction__row__content__img.is-left { order: 2; margin-right: 0; }
  .project-introduction__row__content__img.is-right { order: 2; }
  .project-introduction__row__content__details.is-left { order: 1; margin-right: 0; margin-bottom: 20px; }
  .project-introduction__row__content__details.is-right { order: 1; margin-bottom: 20px; }
}

.project-introduction__row__content__details__table {
  width: 100%;
  margin-bottom: 20px;
}

.project-introduction__row__content__details__table tr {
  border-bottom: 1px solid #B3B3B3;
  display: flex;
  flex-wrap: wrap;
}

.project-introduction__row__content__details__table th {
  padding: 5px 0 3px 0;
  width: 100px;
  color: #333;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.9;
  vertical-align: top;
  text-align: center;
}

@media screen and (max-width: 479px) {
  .project-introduction__row__content__details__table th {
    padding: 7px 0 0 0;
    width: 100%;
    text-align: left;
    line-height: 1;
  }
}

.project-introduction__row__content__details__table td {
  padding: 7px 0 3px 0;
  color: #333;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.9;
  vertical-align: top;
}

@media screen and (max-width: 479px) {
  .project-introduction__row__content__details__table td {
    padding: 0 0 10px 0;
  }
}