/*body*/
#background{
    clear: both; /*플로팅 해제 */
    width: 1519px;
    height: 3200px;
    overflow: hidden; /*영역 넘치면 감춤 */
    position: relative;
}
h2{
    border-right: 5px solid #00409B;
    width: 150px;
    position: relative; /*위치를 상대적으로 베정 */
    top: 90px;
    left: 300px;
}
table {
    width: 600px;
    height: 300px;
    margin: 150px auto 30px auto;
    border-collapse : collapse;
}
td , th {
    border: 1px solid black;
    text-align: left;
    padding: 10px;
}
table tr:first-child  {
    border-top: 4px solid #00409B;
}
table th {
    background-color: #e6ebf6;
}
th:first-child{
    border-left: none;
}
td:last-child{
    border-right: none;
}
.management{
    width: 450px;
    height: 150px;
    margin: 150px auto 0 auto;
    display: flex;
}
.management div {
    flex: 1;
    border-radius: 100%;
    margin: 5px;
    margin-right: -9px;
    position: relative;
    border: 3.5px solid #00409B;
}
.management div:last-child {
    margin-right: 0px; 
}
.management div h3 {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}
.line{
    text-align: center; 
}
.line img {
    width: 500px;
    height: 100px;
}
.management2 {
    width: 800px;
    height: 50px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 30px;
    display: flex;
}
.management2 > div {
    border: 2px solid #00409B;
    background-color: #c8d1e6be;
    border-radius: 10px;
    margin: 0 5px 0 auto;
    padding: 5px;
    display: flex;
    text-align: center;
    justify-content: center;
    align-items: center;
}


.hist{
    margin-top: 150px;
    display: flex;
}
.hist ol {
    list-style-type: none;
    padding-top: 15px;
    padding-bottom: 60px;
}
.hist li {
    font-size: 13px;
    line-height: 25px;
}
.hist1 {
    padding-left: 450px;
    padding-top: 140px;
    text-align: right; 
}
.hist2 {
    position: relative;
}

.hist1 h3 {
    position: relative;
    font-size: 25px;
    color: black;
    line-height: 1;
    z-index: 1;
}
.hist1 h3:before {
    content: "";
    position: absolute;
    right: -43px;
    top: 50%;
    width: 17px;
    height: 17px;
    border-radius: 100%;
    background-color: white;
    border: 5px solid #00409B;
    box-sizing: border-box;
    transform: translateY(-50%);
}
.hist1 div {
    position: relative;
    padding-right: 50px; 
    box-sizing: border-box;
}
.hist1 div:before {
    content: "";
    position: absolute;
    right: 14px;
    top: 0;
    width: 2px;
    height: 100%;
    background-color: lightgray;
}
.hist2 h3 {
    position: relative;
    font-size: 25px;
    color: black;
    line-height: 1;
}
.hist2 h3:before {
    content: "";
    position: absolute;
    left: -39px;
    top: 50%;
    width: 17px;
    height: 17px;
    border-radius: 100%;
    background-color: white;
    border: 5px solid #00409B;
    box-sizing: border-box;
    transform: translateY(-50%);
}
.hist2 div {
    position: relative;
    padding-left: 15px; 
    box-sizing: border-box;
}
.hist2 div:before {
    content: "";
    position: absolute;
    left: -16px;
    top: 0;
    width: 2px;
    height: 100%;
    background-color: lightgray;
}
.hist2 div:first-child:before{
    top: 10px;
    height: calc(100% - 10px);
}
.map {
    margin-top: 150px;
    text-align: center;
}
.btn {
    width: 40px;
    height: 40px;
    border: none;
    background-color: lightgrey;
    border-radius: 100%;
    position: fixed;
    right: 100px;
    bottom: 50px;
    cursor: pointer;
    transform: rotate(90deg);
    z-index: 1;
}
.btn > h {
    font-size : 30px;
    position: relative;
    bottom: 2.2px;
    left: 12.3px;
}