a.current {
  color: #0db8e4;
}

.wall_1 {
  position: relative;
  height: 65vh;
  overflow: hidden;
}

.wall_1 .bg {
  position: relative;
  background-image: url("../master/image/product_resister/ldr_0.png");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: right;
  height: 100%;
  flex-direction: column;
  transform: scale(1.1);
}

.wall_1 .wall_1_nav {
  position: absolute;
  left: 50%;
  top: 0;
  transform: translate(-50%, 0);
  display: block;
  height: 100%;
}

.wall_1 .wall_1_nav ul {
  display: flex;
  position: absolute;
  top: 15%;
  right: 5%;
}

.wall_1 .wall_1_nav ul::before {
  content: "";
  position: absolute;
  top: 0;
  width: 1000vh;
  left: -1000%;
  height: 1px;
  background: #f1f1f1;
  opacity: 0.5;
}

.wall_1 .wall_1_nav ul li {
  margin-left: 1rem;
  line-height: 1rem;
  font-size: 0.8rem; 
}

.wall_1 .wall_1_nav ul li a {
  font-size: 0.8rem;
}

.wall_1 .wall_1_1 {
  display: flex;
  flex-direction: column;
  width: 100%;
  position: absolute;
  top: 30%;
  left: 0;
  text-align: center;
}

.wall_1 .wall_1_1 h4 {
  transform: translate(-9%, 0);
}

.wall_1_2 {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 0);
}

.wall_1_2 nav {
  position: relative;
  background: #dddddd;
  opacity: 0.8;
}

.wall_1_2 nav ul li a:hover {
  color: #0db8e4;
}

.wall_1_2 .bg {
  position: absolute;
  bottom: -15vh;
  left: 50%;
  transform: translate(-50%, 0);
  background-image: url("../master/image/product_resister/ldr_0_1.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  height: 45vh;
  flex-direction: column;
}

.wall_2 {
  position: relative;
}

.wall_2 .wall_2_1 span a {
    top: 8rem;
}

.wall_2 .wall_2_1_1 .bg {
  background-image: url("../master/image/product_resister/ldr_1.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: 48% 58%;
  height: 35vh;
  flex-direction: column;
}

.wall_2 .wall_2_1_2 {
  justify-content: flex-start;
}

.wall_2 .wall_2_2 {
  margin: 0 auto 80px;
}

.wall_2 .wall_2_3 {
  position: relative;
  overflow: hidden;
}

.wall_2 .wall_2_3 .width_80.max_width_1366.index_2{
  margin: 0;
}

.wall_2 .wall_2_3 .bg {
  left: 0;
  top: 0;
  position: absolute;
  background-image: url("../master/image/product_resister/ldr_last.png");
  background-size: 110%;
  background-repeat: no-repeat;
  background-position: center;
  height: 100%;
  display: flex;
  align-items: center;
  transform: scale(1.1);
}

.wall_2 .wall_2_3_1 hr {
  width: 3rem;
  height: 1px;
  border: none;
  background: #fff;
  opacity: 0.5;
}

.wall_2 .wall_2_3_2 {
  display: flex;
}

.wall_2 .wall_2_3_2 ul {
  margin: 0;
}

.wall_2 .wall_2_3_2_1 .bg {
  position: relative;
  background-image: url("../master/image/product_resister/ldr_2.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  height: 10vh;
  margin: 1.8rem 0;
}

.wall_2 .wall_2_3_2_2 .bg {
  position: relative;
  background-image: url("../master/image/product_resister/ldr_3.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  height: 10vh;
  margin: 1.8rem 0;
}

.wall_2 .wall_2_3_2_3 .bg {
  position: relative;
  background-image: url("../master/image/product_resister/ldr_4.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  height: 10vh;
  margin: 1.8rem 0;
}

.wall_2 .wall_2_3_2_4 .bg {
  position: relative;
  background-image: url("../master/image/product_resister/ldr_5.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  height: 10vh;
  margin: 1.8rem 0;
}

.wall_2 .wall_2_3_2_5 .bg {
  position: relative;
  background-image: url("../master/image/product_resister/ldr_6.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  height: 10vh;
  margin: 1.8rem 0;
}

@media screen and (min-width: 1600px) { 

}

@media screen and (max-width: 768px) { 
  .wall_1 .wall_1_nav ul {
    top: 20%;
  }

  .wall_1_2 {
    text-align: center;
  }

  .wall_1_2 nav ul {
    justify-content: space-around;
    flex-wrap: wrap;
  }

  .wall_1_2 nav ul li {
    min-width: 25%;
    width: auto;
    max-width: 30%;
  }

  

  .wall_1_2 a {
    display: flex;
    text-align: center;
    margin: 0;
    padding: 5px 0;
    justify-content: center;
  }
  
  .wall_1 .wall_1_1 {
    width: 80%;
    top: 40%;
    text-align: center;
    left: unset;
  }

  .wall_1 .wall_1_1 h4 {
    transform: translate(0, 0);
    margin: 0 0 5px 0;
  }
  
  .wall_1 .wall_1_1 h3 {
    line-height: 1;
  }
  
  .wall_2 .wall_2_1 {
    flex-direction: column;
  }

  .wall_2 .wall_2_1 span {
    display: none;
  }

  .wall_2 .wall_2_1 .column {
    width: 100%;
  }

  .wall_2 .wall_2_1_2 .bg {
    margin: 0 auto;
  }

  .wall_2 .wall_2_2 ul {
    flex-direction: column;
  }

  .wall_2 .wall_2_2 ul li {
    width: 100%;
  }

  .wall_2 .wall_2_3 .bg {
  left: 0;
  top: 0;
    background-size: auto 110%;
  }
  
  .wall_2 .wall_2_3_2_1 .bg,
  .wall_2 .wall_2_3_2_2 .bg,
  .wall_2 .wall_2_3_2_3 .bg,
  .wall_2 .wall_2_3_2_4 .bg,
  .wall_2 .wall_2_3_2_5 .bg {
    background-size: contain;
  }

  .wall_2 .wall_2_3 .width_80.max_width_1366.index_2{
    text-align: center;
  }

  .wall_2 .wall_2_3_2 ul {
    flex-wrap: wrap;
  }

  .wall_2 .wall_2_3_2 ul li {
    width: 100%;
  }
}