.sec_title {
  margin-bottom: 35px;
}
.sec_title_en {
  color: #164DDB;
  font-weight: 600;
  line-height: 1;
  font-family: "Montserrat", sans-serif;
  margin-bottom: 10px;
}
.sec_title_ja {
  font-weight: bold;
}
.center {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
}

@media screen and (max-width: 768px) {
  .sec_title {
    margin-bottom: 25px;
  }
  .sec_title_en {
    font-size: 88px;
    margin-bottom: 5px;
  }
  .sec_title_ja {
    font-size: 48px;
  }
}

@media screen and (max-width: 480px) {
  .sec_title_en {
    font-size: 56px;
  }
  .sec_title_ja {
    font-size: 28px;
  }
}