@charset "UTF-8";

.pagesec1 .flexbox2{
  background: #e3f7f5;
  background: #f5faff;
  margin-top: 3rem;
  padding: 3rem;
}
.pagesec2{
  padding-bottom: 0;
}
.pagesec2 .txtbox{
  margin-top: 2rem;
}
.pagesec2 .content{
  background: #e3f7f5;
  background: #f5faff;
  margin-top: 5rem;
  padding-top: 5rem;
  padding-bottom: 8rem;
}
.pagesec2 .content::before{
  content: "";
  background: url(../../images/page/maintenance-and-operation/maintenance_bg.webp) no-repeat center / cover;
  position: absolute;
  top: 0;
  left: 0;
  height: 300px;
  width: 100%;
}
.pagesec2 .content .flexbox3{
  gap: 2rem;
}
.pagesec2 .content .fbox{
  background: #fff;
  border-right: 2px solid #1C293E;
  border-bottom: 2px solid #1C293E;
  padding: 2rem 2rem 3rem;
  width: calc(100% / 3 - 2rem);
}
.pagesec2 .content .fbox dt{
  border-bottom: 2px solid #ccc;
  color: #1C293E;
  font-size: 1.8rem;
  font-weight: bold;
  padding-bottom: .5rem;
  position: relative;
}
.pagesec2 .content .fbox dt::before{
  content: "";
  background: #1C293E;
  position: absolute;
  bottom: -2px;
  left: 0;
  height: 2px;
  width: 80px;
}
.pagesec2 .content .fbox .imgbox{
  max-width: 60%;
  margin: 1rem auto;
}
@media only screen and (max-width: 1180px) {
  
}
@media only screen and (max-width: 1024px) {
  
}
@media only screen and (max-width: 820px) {
  .pagesec2 .content .flexbox3{
    gap: 1rem;
  }
  .pagesec2 .content .fbox{
    width: calc(100% / 3 - 1rem);
  }
  .pagesec2 .content .fbox dt{
    border: none;
    text-align: center;
  }
  .pagesec2 .content .fbox dt::before{
    opacity: 0;
  }
  .pagesec2 .content .fbox .imgbox{
    max-width: 80%;
  }
}
@media only screen and (max-width: 768px) {
  
}
@media only screen and (max-width: 767px) {
  .pagesec1 .flexbox2{
    padding: 2rem;
  }
  .pagesec1 .ftxtbox,
  .pagesec1 .fimgbox{
    width: 100%;
  }
  .pagesec1 .flexbox2,
  .pagesec2 .content .flexbox3{
    gap: 2rem;
  }
  .pagesec2 .content .fbox{
    width: 100%;
  }
  .pagesec2 .content .fbox dt{
    border-bottom: 2px solid #ccc;
    text-align: left;
  }
  .pagesec2 .content .fbox dt::before{
    opacity: 1;
  }
  .pagesec2 .content .fbox .imgbox{
    max-width: 50%;
  }
}