#container #box_works #area_gray {
  background: #F6F6F6;
  padding: 30px 0;
}
#container #box_works #area_gray h3 {
  font-size: 4vw;
  margin-left: 5%;
  position: relative;
  margin-bottom: 30px;
  display: inline-block;
}
#container #box_works #area_gray h3::after {
  content: "";
  position: absolute;
  right: -5vw;
  bottom: 0;
  background: #333;
  height: 1px;
  width: 4vw;
}
#container #box_works #area_gray ul {
  overflow: hidden;
}
#container #box_works #area_gray ul li {
  width: 50%;
  float: left;
}
#container #box_works #area_gray ul li a {
  color: #333;
}
#container #box_works #area_gray ul li a img {
  width: 100%;
  height: auto;
  vertical-align: bottom;
}
#container #box_works #area_gray ul li a div {
  padding: 10px 10px 20px 10px;
  background: url("../images/arrow.png") no-repeat right 3vw bottom 3vw, #fff;
  -webkit-background-size: 10px;
  -o-background-size: 10px;
  background-size: 10px;
}
#container #box_works #area_gray ul li a div h4 {
  font-size: 3vw;
}
#container #box_works #area_gray ul li a div p {
  font-size: 2.7vw;
}
#container #box_works #area_gray ul li:nth-child(even) {
  margin-right: 0;
}
#container #box_works #area_detail {
  padding: 30px 0;
  margin-left: 5%;
  overflow: hidden;
}
#container #box_works #area_detail h3 {
  font-size: 4vw;
  margin-bottom: 30px;
  padding-left: 5%;
  padding-right: 5%;
  line-height: 1.6;
}
#container #box_works #area_detail #data {
  position: relative;
  padding-left: 5%;
  padding-bottom: 5%;
  padding-right: 5%;
}
#container #box_works #area_detail #data div dl {
  display: table;
  width: 100%;
}
#container #box_works #area_detail #data div dl dd, #container #box_works #area_detail #data div dl dt {
  display: table-cell;
  font-size: 3vw;
  line-height: 1.5;
  padding-bottom: 15px;
}
#container #box_works #area_detail #data div dl dt {
  font-weight: bold;
  width: 30%;
}
#container #box_works #area_detail #data div dl dd {
  width: 70%;
}
#container #box_works #area_detail #data:before {
  content: '';
  position: absolute;
  width: 1px;
  top: -100%;
  left: 0;
  bottom: -80%;
  background: #dedede;
}
#container #box_works #area_detail ul {
  padding: 0 10% 0 5%;
}
#container #box_works #area_detail ul li {
  margin-bottom: 20px;
  text-align: center;
}
#container #box_works #area_detail ul li img {
  width: 100%;
  max-width: 100%;
  height: auto;
  vertical-align: bottom;
  margin: 0 auto;
}
#container #box_works nav {
  margin-top: 20px;
}
#container #box_works nav ul {
  padding: 10px;
  overflow: hidden;
}
#container #box_works nav ul li {
  width: 49%;
  margin-right: 2%;
  margin-bottom: 4%;
  float: left;
  font-size: 3vw;
  font-weight: bold;
}
#container #box_works nav ul li a {
  color: #333;
}
#container #box_works nav ul li img {
  width: 25%;
  vertical-align: middle;
  margin-right: 10px;
}
#container #box_works nav ul li.current a {
  color: #008cd3;
}
#container #box_works nav ul li:nth-child(even) {
  margin-right: 0;
}

/****************************************************************************************

Media Query for PC

****************************************************************************************/
@media print, screen and (min-width: 750px) {
  #container {
    padding: 20px 0 120px 0;
  }
  #container #box_works {
    overflow: hidden;
  }
  #container #box_works #area_gray {
    padding: 70px 4%;
    width: 67%;
    float: left;
  }
  #container #box_works #area_gray h3 {
    font-size: 27px;
    margin: 0 0 60px 0;
  }
  #container #box_works #area_gray h3::after {
    right: -35px;
    width: 27px;
  }
  #container #box_works #area_gray ul li {
    width: 32%;
    margin-right: 2%;
    margin-bottom: 2%;
    background-color: #fff;
  }
  #container #box_works #area_gray ul li a img {
    transition: .5s;
  }
  #container #box_works #area_gray ul li a img:hover {
    opacity: 0.6;
  }
  #container #box_works #area_gray ul li a div {
    padding: 20px;
    background: url("../images/arrow.png") no-repeat right 30px bottom 20px, #fff;
    -webkit-background-size: auto;
    -o-background-size: auto;
    background-size: auto;
    transition: .3s;
  }
  #container #box_works #area_gray ul li a div h4 {
    font-size: 15px;
    letter-spacing: 0;
  }
  #container #box_works #area_gray ul li a div p {
    font-size: 13px;
  }
  #container #box_works #area_gray ul li:hover div {
    background: url("../images/arrow.png") no-repeat right 20px bottom 20px, #fff;
  }
  #container #box_works #area_gray ul li:nth-child(even) {
    margin-right: 2%;
  }
  #container #box_works #area_gray ul li:nth-child(3n) {
    margin-right: 0;
  }
  #container #box_works #area_detail {
    padding: 70px 00;
    width: 70%;
    float: left;
  }
  #container #box_works #area_detail h3 {
    font-size: 25px;
    padding: 0 0  20px 20px;
    padding-right: 0;
    margin-bottom: 20px;
  }
  #container #box_works #area_detail #data {
    position: relative;
    padding-left: 0;
    padding-bottom: 50px;
    padding-right: 0;
    display: table;
    width: 820px;
  }
  #container #box_works #area_detail #data div {
    display: table-cell;
    width: 390px;
    padding-left: 20px;
  }
  #container #box_works #area_detail #data div dl dd, #container #box_works #area_detail #data div dl dt {
    font-size: 14px;
  }
  #container #box_works #area_detail #data div dl dt {
    font-weight: bold;
    width: 30%;
  }
  #container #box_works #area_detail #data div dl dd {
    width: 68%;
    padding-right: 2%;
  }
  #container #box_works #area_detail #data div.line {
    position: relative;
  }
  #container #box_works #area_detail #data div.line:before {
    content: '';
    position: absolute;
    width: 1px;
    top: -300%;
    left: 0;
    bottom: -250%;
    background: #dedede;
    z-index: -1;
  }
  #container #box_works #area_detail #data:before {
    content: '';
    position: absolute;
    width: 1px;
    top: -200%;
    left: 0;
    bottom: -120%;
    background: #dedede;
  }
  #container #box_works #area_detail ul {
    padding-left: 0;
    padding-right: 5%;
    width: 750px;
    margin: 0 auto;
    box-sizing: border-box;
  }
  #container #box_works #area_detail ul li {
    margin-bottom: 50px;
  }
  #container #box_works #area_detail ul li img {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 750px;
  }
  #container #box_works nav {
    margin-top: 0;
    width: 25%;
    float: right;
  }
  #container #box_works nav ul {
    padding: 10px 0  0 30px;
    overflow: hidden;
  }
  #container #box_works nav ul li {
    width: auto;
    margin-right: 0;
    margin-bottom: 4%;
    float: none;
    font-size: 14px;
  }
  #container #box_works nav ul li img {
    width: auto;
    margin-right: 20px;
  }
  #container #box_works nav ul li:hover a {
    color: #008cd3;
  }
}