@charset "UTF-8";


.inner{
    display: block;
    width: 1090px;
    margin: 0 auto;
}


body{
    position: relative;
}

.back_img {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1280px;
    overflow: hidden;
    z-index: -1;
    max-width: 1280px;
}

.back_img2 {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);

  width: 1280px;
  min-width: 100vw;
  height: auto;

  z-index: -2;
}

.main_title{
    margin: 200px auto 40px;
    padding-bottom: 40px;
    border-bottom: solid 1px #143167;
    text-align: center;
    color: #143167;
    font-weight: 500;
}
.main_title p{
    font-size: 22px;
    margin-bottom: 20px;
    font-weight: bold;
}
.main_title h1{
    font-size: 42px;
    margin-bottom: 20px;
    line-height: 1.5;
    font-weight: bold;
}

.main_icon{
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 80px;
}
.main_icon p{
    color: #FFF;
    font-size: 20px;
    padding: 2px 21px;
    margin-right: 25px;
    border-radius: 5px;
}
.main_icon_economics{
    background-color: #31385E;
}
.main_icon_letters{
    background-color: #B32B2D;
}
.main_icon h2{
    color: #143167;
    font-size: 30px;
    font-weight: bold;
}
.main_img{
    border-radius: 300px;
    margin-bottom: 100px;
}
.main_img_{
    margin-bottom: 15px;
}
.main_img_p{
    margin-bottom: 100px;
    text-align: right;
    font-size: 14px;
    font-weight: 300;
    color: #143167;
}
.main_introduction{
    margin-bottom: 150px;
}
.contents{
    margin-bottom: 120px;
}
.contents img{
    margin-bottom: 80px;
}
.explanation{
    margin-bottom: 150px;
}
.banner{
    margin-bottom: 100px;
}

.con{
    color: #143167;
    margin-bottom: 250px;
}
.conlink{
    display: flex;
    justify-content: space-between;
    margin-bottom: 200px;
}
.conlink a{
    width: 32%;
}
.conlink a img{
    border-radius: 10px;
}
.con_img{
    margin-bottom: 70px;
}
.con_img img{
    margin-bottom: 5px;
}
.con_img p{
    text-align: right;
    font-size: 14px;
    font-weight: 300;
}
.con_read{
    font-size: 22px;
    margin-bottom: 70px;
    text-align: center;
}
.con_pro{
    margin-bottom: 70px;
}
.con_con{
    margin-bottom: 70px;
}
.con_copy{
    margin-bottom: 70px;
}
.con_more{
    margin-bottom: 70px;
}
.con_messe{
    margin-bottom: 70px;
}
.page_top{
    display: block;
    position: relative;
    text-align: right;
    padding-right: 20px;
    font-size: 18px;
    font-family: 'Noto Sans JP', sans-serif;
    color: #143167;
}
.page_top::after{
    content: "";
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 0;
    background: url(../images/classdive/02/arrow.png) no-repeat center center;
    background-size: contain;
    width: 15px;
    height: 15px;
}
.con_btn{
    width: 800px;
    margin: 180px auto 0;
    display: block;
}