@charset "utf-8";

* {
  padding: 0;
  margin: 0;
  -webkit-box-sizing: border-box;
  box-sizing: border-box;
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", "맑은 고딕", sans-serif;
}


iframe {
  border: 0;
  padding: 0;
  margin:0;
}

body {
  font-size: 12px;
  line-height: 1.5;
  color: #666;

}

a {
  text-decoration: none;
  color: #333;
}

button {
  cursor: pointer;
}

input {
  border: 1px #999 solid;
}

ul,
li {
  list-style: none;
}

img {
  width: auto;
  height: auto;
}

button {
  outline: 0;
  border: 0;
  background-color: transparent;
}

button:hover {
  background-color: #e5f4ff;
  border-color: #858fa0;
  color: #353535;
}

label {
  cursor: pointer;
}


.blind {
  position: absolute;
  overflow: hidden;
  margin: -1px;
  width: 1px;
  height: 1px;
  font-size: 1px !important;
  line-height: 0;
  text-indent: -9999px;
}

.wrap {
  position: relative;
  display: flex;
  flex-direction: row;
  align-content: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  box-sizing: border-box;
  overflow-x: hidden;
}

.edu_main_index {
    position: relative;
    width:100vw;/*width:1900px;*/
    height:1125px;
}

.chapter_group {
    position: absolute; top:426px; 
}
.chapter_box {top:37px; position: absolute; width:390px;}
.chapter_box ol > li+li {margin-top: 12px;}
.chapter_box ol > li a {display: block; position:relative; height: 36px;box-sizing: border-box; }
.chapter_box ol > li a::before {opacity: 0; content:''; position: absolute; bottom:-5px; left:0; width:0; height:50px;transition:opacity .5s;background:rgba(223, 238, 245, 0.5)}
.chapter_box ol > li a:hover::before {opacity: 10; width: 100%;}
.chapter_box ol > li:nth-child(2) {margin-top: 19px;}
.chapter_box ol > li:nth-child(3) {margin-top: 19px;}
.chapter_box ol > li:nth-child(4) {margin-top: 19px;}
.chapter_box ol > li:nth-child(5) {margin-top: 19px;}
.chapter_box ol > li:nth-child(6) {margin-top: 19px;}
.chapter_box ol > li:nth-child(7) {margin-top: 19px;}
.chapter_box ol > li:nth-child(8) {margin-top: 19px;}

.chapter_box.chapter01 {left:370px}
.chapter_box.chapter02_a {left:835px}
.chapter_box.chapter03_a {left:1325px}

.typing-container {
  position: absolute;
  right: 180px;
  top: 154px;
  width: 197px;
  height: 30px;
  font-size: 22px;
  font-weight: bold;
  color: #000;
  line-height: 24px;
  background: #fff;
  white-space: nowrap;
  overflow: hidden;
}
.cursor {
  display: inline-block;
  width: 2px;
  height: 24px;
  background: rgb(102 102 102 / 40%);
  margin-left: 3px;
  animation: blink 0.7s steps(1) infinite;
  vertical-align: middle;
}

@keyframes blink {
  0%, 50% {
    opacity: 1;
  }
  50.01%, 100% {
    opacity: 0;
  }
}