.page-lower #visual {
  background: url(../images/enterprise/visual.jpg) center center /cover no-repeat;
}
@media (max-width:768px) {
  .page-lower #visual {
    background-image: url(../images/enterprise/visual.webp);
  }
}
#main .title-sub {
  font-size: 2.4rem;
  font-weight: bold;
  text-align: center;
  color: var(--c-ye);
}
@media (max-width:768px) {
  #main .title-sub {
    line-height: 1.5;
  }
  #main .layout-col-4 {
    display: block;
    text-align: center;
  }
  #main .layout-col-4 > * {
    width: 100%;
    margin: 0;
  }
  #main .layout-col-4 > * ~ * {
    margin-top: 20px;
  }
}