.form-complete {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 0 20px 43px;
  margin: 0 auto 30px;
  border-bottom: 1px solid #ddd;
}
.form-complete-box {
  text-align: left;
}
.form-complete__title {
  margin-bottom: 15px;
  font-size: 20px;
}
.form-complete__text {
  font-size: 14px;
}
.form-complete__btn {
  margin-bottom: 40px;
}
.form-complete table.form-table {
  display: table-cell;
  width: auto;
  padding: 28px 40px;
}

.caution-text {
  padding-left: 0.6em;
  margin: 0 20px 5px;
  font-size: 13px;
  text-indent: -0.6em;
}
.caution-text:last-of-type {
  margin: 0 20px 40px;
}

.form-content__completed-message {
  padding: 0 20px;
}
.form-content__completed-message > p {
  line-height: 25px;
  text-align: left;
}
.form-content__btn a {
  width: 257px;
}
@media (min-width: 768px) {
  .form-complete {
    display: block;
    width: 900px;
    padding: 85px 0 65px;
    margin: 0 auto 46px;
    border: 1px solid #ddd;
  }
  .form-complete-box {
    text-align: center;
  }
  .form-complete__title {
    margin-bottom: 42px;
    font-size: 24px;
  }
  .form-complete__text {
    font-size: 15px;
  }
  .form-complete__btn {
    margin-bottom: 60px;
  }
  .caution-text {
    width: 900px;
    margin: 0 auto 5px;
    font-size: 14px;
  }
  .caution-text:last-of-type {
    margin: 0 auto 45px;
  }
  .form-content__completed-message > p {
    text-align: center;
  }
  .form-content__btn a {
    width: 300px;
  }
}