#key {
  background-image: url("../img/business/chikudensol/kv.jpg");
}
#sec1 {
  margin: 0 auto 50px;
  padding: 0 50px;
  max-width: 1100px;
}
@media only screen and (max-width: 767px) {
  #sec1 {
    margin: 0 0 8vw;
    padding: 0 4%;
  }
}
#sec2 {
  background: #f1f6fa;
  padding: 107px 50px 75px;
}
#sec2 .wrap {
  max-width: 1000px;
}
#sec2 .sec2-item {
  background: #fff;
  box-sizing: border-box;
  position: relative;
  padding: 65px 10px 53px 63px;
  margin-bottom: 34px;
  min-height: 327px;
}
#sec2 .sec2-img {
  position: absolute;
  top: 40px;
  right: 8.9%;
  width: 24.4%;
}
#sec2 .sec2-img img {
  width: 100%;
}
#sec2 h2 {
  color: #0068b7;
  font-size: 30px;
  margin-bottom: 25px;
}
#sec2 h2 span {
  display: inline-block;
  border-bottom: 1px solid #333;
  color: #333;
  font-size: 20px;
  font-weight: 500;
  padding-bottom: 10px;
  margin-bottom: 15px;
}
#sec2 .sec2-txt a {
  display: block;
  color: #0068b7;
  text-decoration: underline;
}
#sec2 .sec2-txt a:hover {
  text-decoration: none;
}
@media only screen and (min-width: 768px) {
  #sec2 h2, #sec2 .sec2-txt {
    width: 55%;
  }
}
@media only screen and (max-width: 960px) and (min-width: 768px) {
  #sec2 .sec2-item {
    padding: 40px 10px 53px 42px;
  }
  #sec2 h2, #sec2 .sec2-txt {
    width: 64%;
  }
  #sec2 .sec2-img {
    right: 6%;
  }
}
@media only screen and (max-width: 767px) {
  #sec2 {
    padding: 13vw 0 5vw;
  }
  #sec2 h2 {
    font-size: 6vw;
    margin-bottom: 20px;
  }
  #sec2 h2 span {
    font-size: 4vw;
    padding-bottom: 2vw;
    margin-bottom: 1vw;
  }
  #sec2 .sec2-item {
    padding: 5vw 5% 10vw;
    margin-bottom: 10vw;
  }
  #sec2 .sec2-img {
    position: static;
    margin: 0 auto 5vw;
    width: 42%;
    max-width: 244px;
  }
}
#sec3 {
  max-width: 1100px;
  margin: 109px auto 0;
  padding: 0 50px;
}
#sec3 .sec3-txt1 {
  color: #333;
  font-weight: 500;
  line-height: 36px;
  font-size: 24px;
  margin-bottom: 25px;
}
#sec3 .sec3-txt1 span {
  display: inline-block;
  color: #fff;
  background: #333;
  font-size: 20px;
  padding: 0 10px;
  border-radius: 7px;
  margin-right: 15px;
}
#sec3 .sec3-txt2 {
  color: #333;
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 35px;
  margin-top: 10px;
}
#sec3 .sec3-video {
  margin: 40px auto 57px;
  max-width: 700px;
}
#sec3 .sec3-video img {
  width: 100%;
}
#sec3 .sec3-link a {
  display: -webkit-flex;
  display: -moz-flex;
  display: -ms-flex;
  display: -o-flex;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 15px;
  font-weight: 500;
  color: #333;
}
#sec3 .sec3-link a i {
  display: flex;
  margin-left: 3px;
  line-height: 1;
  height: 6px;
}
@media only screen and (max-width: 767px) {
  #sec3 {
    margin: 13vw 0 0;
    padding: 0 4%;
  }
  #sec3 .sec3-txt1 {
    font-size: 4.5vw;
    line-height: 1.5;
    margin-bottom: 3vw;
  }
  #sec3 .sec3-txt1 span {
    font-size: 4vw;
    margin-right: 10px;
  }
  #sec3 .sec3-txt2 {
    font-size: 4vw;
    margin: 2vw 0 5vw;
  }
  #sec3 .sec3-video {
    margin: 8vw 0;
  }
  #sec3 .sec3-link p + p{
    margin-top: 10px;
  }
}