.mv {
  background-image: url(../img/business_mv.jpg);
}
@media screen and (max-width: 768px) {
  .mv {
    background-position: top right 30%;
  }
}

ul.nav {
  display: flex;
  justify-content: center;
}
ul.nav li {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 20px;
  margin: 5px 0 18px;
  padding: 0 3.5%;
}
ul.nav li:not(:nth-last-of-type(1)) {
  border-right: 1px solid #bdbdbd;
}
ul.nav li.act {
  position: relative;
}
ul.nav li.act::after {
  content: "";
  width: 110px;
  height: 13px;
  background: url(../img/ttl_act.gif) no-repeat center bottom/cover;
  position: absolute;
  bottom: -18px;
  left: 50%;
  transform: translateX(-50%);
}
ul.nav li a, ul.nav li span {
  font-size: 18px;
  line-height: 1;
}
ul.nav li a {
  transition: all 0.3s;
}
ul.nav li a:hover {
  color: #e72a48;
}

section {
  margin-bottom: 55px;
  padding-top: 55px;
  background: url(../img/top_frame.gif) no-repeat center top/contain;
}
@media screen and (max-width: 768px) {
  section {
    padding-top: 0;
    background: none;
  }
}
section .inner {
  max-width: 850px;
}
section h2 {
  margin-bottom: 55px;
}
@media screen and (max-width: 768px) {
  section h2 {
    margin-bottom: 24px;
  }
}
section ul {
  display: flex;
  justify-content: space-between;
}
@media screen and (max-width: 768px) {
  section ul {
    display: block;
  }
}
section ul li {
  width: 48%;
  margin-bottom: 16px;
  background-color: #eff5d3;
  border-radius: 10px;
  overflow: hidden;
}
@media screen and (max-width: 768px) {
  section ul li {
    width: 100%;
  }
}
section ul li:nth-of-type(1) h3 {
  background: url(../img/bisiness01.jpg) no-repeat center center/cover;
}
@media screen and (max-width: 768px) {
  section ul li:nth-of-type(1) h3 {
    background-image: url(../img/bisiness01_sp.jpg);
  }
}
section ul li:nth-of-type(2) h3 {
  background: url(../img/bisiness02.jpg) no-repeat center center/cover;
}
@media screen and (max-width: 768px) {
  section ul li:nth-of-type(2) h3 {
    background-image: url(../img/bisiness02_sp.jpg);
  }
}
section ul li:nth-of-type(3) h3 {
  background: url(../img/bisiness03.jpg) no-repeat center center/cover;
}
@media screen and (max-width: 768px) {
  section ul li:nth-of-type(3) h3 {
    background-image: url(../img/bisiness03_sp.jpg);
  }
}
section ul li h3 {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 280px;
  text-align: center;
  font-size: 36px;
  color: #fff;
  letter-spacing: 3px;
  text-shadow: 0 0 5px rgba(0, 0, 0, 0.6);
}
@media screen and (max-width: 768px) {
  section ul li h3 {
    height: auto;
    padding: 12% 3.5%;
    font-size: 24px;
  }
}
section ul li p {
  padding: 5%;
}