/* Basic Set-up */
@font-face {
  font-family: 'Pretendard-Regular';
  src: url('https://cdn.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-Regular.woff') format('woff');
  font-weight: 400;
  font-style: normal;
}
@font-face {
  font-family: 'S-CoreDream-7ExtraBold';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_six@1.2/S-CoreDream-7ExtraBold.woff') format('woff');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'ChosunKg';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_20-04@1.0/ChosunKg.woff') format('woff');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'Pretendard-ExtraBold';
  src: url('https://cdn.jsdelivr.net/gh/Project-Noonnu/noonfonts_2107@1.1/Pretendard-ExtraBold.woff') format('woff');
  font-weight: 800;
  font-style: normal;
}
body {
  font-family: 'Pretendard-Regular';
  line-height: 1.6;
  color: #4d4d4d;
}

a {
  text-decoration: none;
  color: #ffffff;
}

img {
  width: 35%;
  display: block;
}

.inner { 
  width: 1400px;
  margin: 0 auto;
  position: relative;
}

.sub_body ul a .box4 {
  border-bottom: 1.5px solid rgb(0, 135, 224);
  color: rgb(0, 135, 224);
}

/* BODY */

.membrane_top_container {
  margin: 200px auto;
  width: 1000px;
  height: 300px;
}
.membrane_top_container .top_title {
  font-size: 18px;
  font-weight: 700;
  text-align: center;
}
.membrane_top_container hr {
  width: 30px;
  height: 4px;
  background-color: #c8c8c8;
  border: none;
}
.membrane_top_container .top_body {
  width: 800px;
  height: 500px;
  margin: 60px auto;
  display: flex;
}
.membrane_top_container .top_body .text_box {
  margin: 0 auto;

  width: 400px;
  height: 400px;
}
.membrane_top_container .top_body .text_box .title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 25px;
}
.membrane_top_container .top_body .img {
  background-image: url(/images/TECH/membrane_1.png);
  width: 280px;
  height: 380px;
  background-size: 80%;
  background-repeat: no-repeat;
  margin-left: 5%;
}

.three_step_container {
  width: 800px;
  height: 600px;
  margin: 0 auto;
}
.three_step_container .title {
  font-size: 24px;
  color: #4d72b8;
  font-weight: 700;
  margin-left: 45px;
}
.three_step_container .img {
  width: 650px;
  height: 700px;
  margin: 60px auto;
  background-image: url(/images/TECH/membrane_pattern.png);
  background-repeat: no-repeat;
  background-size: 100%;
}

.grey_container {
  width: 850px;
  height: 350px;
  border: 1px solid rgb(176, 207, 169);
  border-radius: 40px;
  margin: 0 auto;
}
.grey_container .img_box {
  width: 800px;
  height: 300px;
  display: flex;
  margin: 0 auto;
}
.grey_container .grey_img_1 {
  width: 600px;
  height: 600px;
  background: url(/images/TECH/membrane_2.png);
  background-repeat: no-repeat;
  background-size: 110%;
  margin-top: 40px;
}
.grey_container .grey_img_2 {
  margin-top: 140px;
  width: 600px;
  height: 100px;
  background-color: #4d72b8;
  background: url(/images/TECH/membrane_3.png);
  background-repeat: no-repeat;
  background-size: 90%;
}

.titletitle .title {
  margin-top: 140px;
  font-size: 20px;
  font-weight: 700;
  text-align: center;
}
.titletitle hr {
  background-color: #c8c8c8;
  border: none;
  width: 30px;
  height: 4px;
  margin-bottom: 80px;
}

.schematics {
  width: 1000px;
  height: 600px;
  margin: 0 auto;
}
.schematics .img_cont {
  display: flex;
  width: 800px;
  height: 600px;
  margin: 0 auto;
}
.schematics .s_img_1 {
  width: 300px;
  height: 500px;
  background: url(/images/TECH/membrane_4.png);
  background-repeat: no-repeat;
  background-size: 100%;
  margin-left: 40px;
}
.schematics .s_img_2 {
  width: 400px;
  height: 400px;
  background: url(/images/TECH/membrane_5.png);
  background-repeat: no-repeat;
  background-size: 100%;
  margin-left: 50px;
}