.f-red {
  color: #FF1142;
}

.f-blue {
  color: #117DD8;
}

.f-vermilion {
  color: #FF5611;
}

.b-description .b-mv {
  margin: 0 auto 16vw;
}

.b-quality-item {
  margin-bottom: 16vw;
}
.b-quality .e-classtitle {
  margin-bottom: 10.6666666667vw;
}
@media (min-width: 768px) {
  .b-description .b-mv {
    margin-bottom: 85px;
  }
  .b-quality-item {
    margin-bottom: 100px;
  }
  .b-quality .e-classtitle {
    margin-bottom: 50px;
  }
}