#key .bg{
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  background: url("../img/item/key.jpg") no-repeat center/cover;
}
h2 {
  font-size: 24px;
  line-height: 26px;
  text-align: center;
  font-weight: bold;
}
.product:after {
  content: "." !important;
  clear: both !important;
  display: block !important;
  height: 0 !important;
  visibility: hidden !important;
}
.product .item {
  float: left;
}
.product .item .item_img img {
  width: auto;
  max-width: 100%;
  height: auto;
}
.product .item .item_img a:hover {
  opacity: 0.7;
}
.product .item .item_ttl {
  font-size: 14px;
  letter-spacing: 1.6px;
  padding-top: 5px;
}
#sec1 {
  padding: 50px 0 125px;
}
#sec1 .product {
  margin: 0 -20px;
}
#sec1 .product .item {
  width: 580px;
  margin: 50px 20px 0;
}
#sec2 {
  padding-bottom: 170px;
}
#sec2 .product {
  margin: 0 -15px;
}
#sec2 .product .item {
  width: 380px;
  margin: 40px 15px 10px;
}
#sec2 .product .item .item_img {
  width: 380px;
}
#sec2 .product .item .item_ttl {
  padding-top: 15px;
}
@media only screen and (min-width:769px) and (max-width:1200px) {
  #sec1 {
    padding: 50px 0 125px;
  }
  #sec1 .product {
    margin: 0 -2.5%;
  }
  #sec1 .product .item {
    width: 45%;
    max-width: 580px;
    margin: 50px 2.5% 0;
  }
  #sec2 {
    padding-bottom: 170px;
  }
  #sec2 .product {
    margin: 0 -1%;
    text-align: center;
  }
  #sec2 .product .item {
    display: inline-block;
    float: none;
    width: 30%;
    max-width: 380px;
    margin: 40px 1% 10px;
  }
  #sec2 .product .item .item_ttl {
    text-align: left;
  }
}
@media only screen and (max-width:768px) {
  #sec1 {
    padding: 0 0 50px;
  }
  #sec1 .product {
    margin: 0;
  }
  #sec1 .product .item {
    float: none;
    width: auto;
    max-width: 580px;
    margin: 30px auto 0;
  }
  #sec2 {
    padding-bottom: 50px;
  }
  #sec2 .product {
    margin: 0;
  }
  #sec2 .product .item {
    width: auto;
    max-width: 580px;
    float: none;
    margin: 30px auto 0;
  }
  #sec2 .product .item .item_img{
    width: auto;
  }
  #sec2 .product .item .item_ttl {
    padding-top: 15px;
    text-align: left;
  }
}