.h1_bg {
  background: url("../img/mv.jpg") center no-repeat #ebf5fa;
  background-size: cover;
}

.ttl_black {
  margin-top: 50px;
}

.ttl_line {
  margin-top: 70px;
}

.worksimg {
  margin-bottom: 35px;
}
.worksimg li {
  width: 47%;
}
.worksimg li img {
  width: 100%;
  height: auto;
}

@media screen and (max-width: 1080px) and (min-width: 769px) {
  .ttl_line {
    margin-top: 50px;
  }
}
@media only screen and (max-width: 768px) {
  .ttl_line {
    margin-top: 40px;
  }

  .worksimg {
    margin-bottom: 35px;
  }
  .worksimg li {
    width: 90%;
    text-align: center;
    margin: 0 auto;
  }

  .tbl01 {
    width: 100%;
  }
}
.ttl_line.mt0 {
  margin-top: 0;
}

.ttl_black.mt0 {
  margin-top: 0;
}