#sec1 {
  position: relative;
  z-index: 0;
  padding: 15vw 0;
  margin-top: 20vw;
}

#sec1:before {
  content: "";
  background-image: url("../img/course/s1-dc1.jpg");
  background-repeat: no-repeat;
  background-size: 100%;
  background-position: left top;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -1;
}

#sec1:after {
  content: "";
  background-image: url("../img/course/s1-dc2.jpg");
  background-repeat: no-repeat;
  background-size: 69%;
  background-position: 100% 98%;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -1;
}

#sec1 .row1 h2 {
  width: 24%;
  margin: 0 auto;
}

#sec1 .row1 .img {
  margin: 10vw 0 8vw;
}

#sec1 .row2 {
  margin-top: 15vw;
  position: relative;
}

#sec1 .row2 h3 {
  width: 88%;
  margin: 0 auto 3vw;
}

@media only screen and (min-width: 768px) {
  #sec1 {
    padding: 42px 0 81px;
    margin-top: 0;
  }
  #sec1:before {
    background-size: auto;
  }
  #sec1:after {
    width: 349px;
    height: 567px;
    background-size: 100%;
    background-position: 0;
    left: auto;
    right: 0;
    top: 105px;
    bottom: auto;
  }
  #sec1 .row1 h2 {
    width: 132px;
    float: right;
    margin: 0 -5px 0 0;
  }
  #sec1 .row1 .img {
    margin: 0;
    position: absolute;
    left: -250px;
    top: 82px;
  }
  #sec1 .row1 .txt {
    width: 306px;
    height: 380px;
    float: right;
    margin: 142px 34px 0 0;
  }
  #sec1 .row2 {
    margin: 57px 0 0 288px;
    padding-bottom: 12px;
  }
  #sec1 .row2:before {
    content: "";
    height: 1px;
    background: #000;
    position: absolute;
    left: -10px;
    right: -250px;
    bottom: 0;
  }
  #sec1 .row2 h3 {
    width: 100%;
    margin: 0 0 15px;
  }
  #sec1 .row2 .txt {
    margin-left: 23px;
  }
}
@media only screen and (min-width: 1401px) {
  #sec1 .row1 .txt {
    height: 335px;
  }
}
#sec2 {
  position: relative;
  z-index: 1;
  padding-bottom: 15vw;
}

#sec2 h2 {
  width: 80%;
  position: absolute;
  left: 10%;
  top: 18vw;
  z-index: 1;
}

#sec2 h3 {
  width: 50%;
  position: absolute;
  left: 25%;
  top: 40vw;
  z-index: 1;
}

#sec2 .s2-js .slick-slide {
  height: 110vw;
  line-height: 0;
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  position: relative;
}

#sec2 .s2-js .slick-slide:before {
  content: "";
  background: rgba(0, 0, 0, 0.2);
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
}

#sec2 .s2-js .slick-slide:nth-child(1) {
  background-image: url("../img/course/s2-bg1.jpg");
}

#sec2 .s2-js .slick-slide:nth-child(2) {
  background-image: url("../img/course/s2-bg2.jpg");
}

#sec2 .s2-js .slick-slide:nth-child(3) {
  background-image: url("../img/course/s2-bg3.jpg");
}

#sec2 .txt {
  margin: 10vw 0;
}

@media only screen and (min-width: 768px) {
  #sec2 {
    padding-bottom: 83px;
  }
  #sec2:before {
    content: "";
    background-image: url("../img/course/s2-dc.png");
    width: 408px;
    height: 385px;
    background-repeat: no-repeat;
    background-size: 100%;
    position: absolute;
    right: 0;
    top: -294px;
    z-index: 1;
  }
  #sec2 h2 {
    width: auto;
    left: calc(50% - 555px);
    top: 93px;
  }
  #sec2 h3 {
    width: auto;
    left: calc(50% + 279px);
    top: 283px;
    z-index: 1;
  }
  #sec2 .s2-js .slick-slide {
    height: 611px;
  }
  #sec2 .s2-js .slick-slide:before {
    display: none;
  }
  #sec2 .s2-js .slick-dots {
    bottom: 17px;
  }
  #sec2 .s2-js .slick-dots li {
    width: 15px;
    height: 15px;
  }
  #sec2 .s2-js .slick-dots li + li {
    margin-left: 11px;
  }
  #sec2 .txt {
    margin: 48px -150px 42px;
    text-align: center;
    line-height: 38px;
  }
  #sec2 .btn-link {
    width: 270px;
    margin: 0 auto;
  }
}
@media only screen and (min-width: 1401px) {
  #sec2 .txt {
    margin: 48px -60px 42px -87px;
  }
}
#sec3 {
  padding: 20vw 0;
  position: relative;
  z-index: 0;
}

#sec3:after {
  content: "";
  width: 100%;
  height: 50vw;
  background-image: url("../img/course/s3-dc.jpg");
  background-repeat: no-repeat;
  background-size: 100%;
  background-position: center bottom;
  position: absolute;
  right: 0;
  bottom: -5vw;
  z-index: -1;
}

#sec3 .img1 {
  margin: 10vw 0;
}

#sec3 .col .price {
  color: #872b2a;
  font-size: 7vw;
  line-height: 10vw;
  letter-spacing: 0.1em;
}

#sec3 .col .price small {
  font-size: 6vw;
}

#sec3 .col .b-note {
  color: #872b2a;
  font-size: 5vw;
  line-height: 8vw;
  letter-spacing: 0.1em;
  margin-bottom: 5vw;
}

#sec3 .col .b-note small {
  font-size: 4.2vw;
  letter-spacing: 0.1em;
}

#sec3 .col .box {
  width: 80%;
  margin: 0 auto;
  border: 1px solid #000;
  padding: 6vw 5%;
}

#sec3 .col .box .ttl {
  font-size: 5vw;
  line-height: 7vw;
}

#sec3 .col .box .sttl,
#sec3 .col .box ul {
  font-size: 4vw;
  line-height: 8vw;
}

#sec3 .col .box .sttl {
  margin-bottom: 3vw;
}

#sec3 .txt {
  margin: 8vw 0;
}

#sec3 .img-grp {
  margin-top: 5vw;
}

#sec3 .img-grp .img3 {
  padding-right: 4%;
  margin-top: 4vw;
}

@media only screen and (min-width: 768px) {
  #sec3 {
    padding: 113px 0 120px;
  }
  #sec3:after {
    width: 687px;
    height: 297px;
    bottom: -59px;
  }
  #sec3 .wrap:before {
    content: "";
    width: 1px;
    height: 800px;
    background: #6b6a69;
    position: absolute;
    right: -13px;
    top: -178px;
    transform: rotate(33deg);
    z-index: -1;
  }
  #sec3 .wrap:after {
    content: "";
    width: 1px;
    height: 1000px;
    background: #6b6a69;
    position: absolute;
    left: -168px;
    bottom: -346px;
    transform: rotate(-55.5deg);
    z-index: -1;
  }
  #sec3 h2 {
    position: absolute;
    right: 2px;
    top: -50px;
    z-index: 1;
  }
  #sec3 .img1 {
    width: 1138px;
    margin: 0 0 0 -250px;
  }
  #sec3 .col {
    width: 336px;
    float: left;
    margin: 41px 0 0 0;
  }
  #sec3 .col .price {
    font-size: 36px;
    line-height: 55px;
    margin-left: 7px;
  }
  #sec3 .col .price small {
    font-size: 18px;
  }
  #sec3 .col .b-note {
    font-size: 27.57px;
    line-height: 33px;
    margin: 3px 0 25px 4px;
  }
  #sec3 .col .b-note small {
    font-size: 18px;
  }
  #sec3 .col .b-note small span {
    font-size: 20px;
  }
  #sec3 .col .box {
    width: 100%;
    padding: 16px 16px 15px 5px;
  }
  #sec3 .col .box .ttl {
    font-size: 25px;
    line-height: 39px;
  }
  #sec3 .col .box .sttl,
  #sec3 .col .box ul {
    font-size: 20px;
    line-height: 38px;
  }
  #sec3 .col .box .sttl {
    margin: -2px 0 12px;
  }
  #sec3 .row2 {
    position: relative;
  }
  #sec3 .txt {
    line-height: 38px;
    width: 630px;
    float: right;
    margin: 494px -31px 0 0;
  }
  #sec3 .img2 {
    width: 663px;
    position: absolute;
    right: -120px;
    top: 58px;
    margin: 0;
  }
  #sec3 .img-grp {
    margin: 40px -188px 0 -102px;
    justify-content: space-between;
  }
  #sec3 .img-grp .img3 {
    padding-right: 0;
    margin-top: 28px;
  }
}

#sec4 .row1 .col {
  padding: 20vw 5% 10vw;
}

#sec4 .row1 .col h2 {
  width: 76%;
  margin: 0 auto 8vw;
}

#sec4 .row2 {
  width: 94%;
  margin: 15vw auto;
  border: 1px solid #000;
  padding: 6vw 3%;
}

#sec4 .row2 h3 {
  width: 80%;
  margin: 0 auto;
}

#sec4 .row2 .tel {
  color: #8a2e2e;
  font-size: 6.5vw;
  line-height: 8vw;
  letter-spacing: 0.1em;
  border-top: 1px solid #8a2e2e;
  border-bottom: 1px solid #8a2e2e;
  padding: 1vw 0;
  width: 90%;
  margin: 6vw auto 2vw;
}

#sec4 .row2 .txt {
  font-size: 3.2vw;
  line-height: 5vw;
}

@media only screen and (min-width: 768px) {
  #sec4 {
    position: relative;
    z-index: 1;
  }
  #sec4 .row1 {
    max-width: 1166px;
    width: 100%;
    margin: 0 auto;
  }
  #sec4 .row1 .col {
    width: 467px;
    float: left;
    padding: 59px 15px 20px 19px;
    text-align: center;
  }
  #sec4 .row1 .col h2 {
    width: 100%;
    margin: 0 auto 41px;
  }
  #sec4 .row1 .col .txt {
    margin-left: 3px;
  }
  #sec4 .row1 .img {
    width: 699px;
    float: right;
  }
  #sec4 .row2 {
    max-width: 880px;
    width: 100%;
    margin: 84px auto 121px;
    border: 2px solid #706f6e;
    padding: 43px 9px 47px 0;
  }
  #sec4 .row2 h3 {
    width: 100%;
  }
  #sec4 .row2 .tel {
    font-size: 38px;
    line-height: 40px;
    padding: 11px 0 16px 20px;
    width: 512px;
    margin: 40px auto 11px;
  }
  #sec4 .row2 .txt {
    font-size: 22.47px;
    line-height: 34px;
    padding-left: 12px;
  }
}

#sec5 {
  background-image: url("../img/course/s5-bg.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 30%;
  padding: 20vw 0 15vw;
  position: relative;
  z-index: 0;
}

#sec5:before {
  content: "";
  background: rgba(255, 255, 255, 0.3);
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: -1;
}

#sec5 h2 {
  width: 90%;
  margin: 0 auto 5vw;
}

#sec5 .txt {
  background: rgba(255, 255, 255, 0.74);
  padding: 5vw 5%;
}

@media only screen and (min-width: 768px) {
  #sec5 {
    background-position: 50%;
    padding: 126px 0 230px;
  }
  #sec5:before {
    display: none;
  }
  #sec5 .blk {
    width: 531px;
    margin: 0 -10px 0 auto;
    text-align: center;
  }
  #sec5 h2 {
    width: 100%;
    margin: 0 auto 30px;
  }
  #sec5 .txt {
    padding: 33px 20px 32px 23px;
  }
}

#sec6 {
  padding: 10vw 0;
}

#sec6 h2 {
  width: 45%;
  margin: 0 auto 10vw;
}

#sec6 .blk .col {
  padding: 10vw 8%;
  margin: 0 0 10vw;
  position: relative;
}

#sec6 .blk .col .mark {
  background: #5e5d5c;
  color: #fff;
  font-size: 3.5vw;
  line-height: 7.5vw;
  width: 7vw;
  height: 26vw;
  text-align: center;
  position: absolute;
  left: 4%;
  top: 0;
}

#sec6 .blk .col h3 {
  font-size: 5.8vw;
  line-height: 8vw;
  margin-bottom: 4vw;
}

#sec6 .blk .col .price {
  color: #872b2a;
  font-size: 7vw;
  line-height: 10vw;
  letter-spacing: 0.1em;
}

#sec6 .blk .col .price small {
  font-size: 4vw;
}

#sec6 .blk .col .b-note {
  color: #872b2a;
  font-size: 5vw;
  line-height: 6.5vw;
  letter-spacing: 0.1em;
  margin-bottom: 5vw;
}

#sec6 .blk .col .b-note small {
  font-size: 4vw;
  letter-spacing: 0.1em;
}

#sec6 .blk .col .box {
  width: 100%;
  margin: 0 auto 2vw;
  border: 1px solid #000;
  padding: 6vw 5%;
}

#sec6 .blk .col .box .ttl {
  font-size: 5vw;
  line-height: 7vw;
}

#sec6 .blk .col .box .sttl,
#sec6 .blk .col .box ul {
  font-size: 4vw;
  line-height: 8vw;
}

#sec6 .blk .col .box .sttl {
  margin-bottom: 3vw;
}

@media only screen and (min-width: 768px) {
  #sec6 {
    padding: 83px 0 96px;
  }
  #sec6 h2 {
    width: 100%;
    margin: 0 auto 75px;
  }
  #sec6 .blk {
    margin: 0 -25px;
    flex-wrap: wrap;
  }
  #sec6 .blk .col {
    width: 510px;
    padding: 43px 57px 47px;
    margin: 0 0 45px;
  }
  #sec6 .blk .col .mark {
    font-size: 19px;
    line-height: 39px;
    letter-spacing: 0.1em;
    width: 38px;
    height: 150px;
    left: 39px;
  }
  #sec6 .blk .col h3 {
    font-size: 30px;
    line-height: 38px;
    margin: 0 17px 22px 0;
  }
  #sec6 .blk .col .price {
    font-size: 27px;
    line-height: 29px;
    padding-right: 10px;
  }
  #sec6 .blk .col .price small {
    font-size: 25px;
  }
  #sec6 .blk .col .b-note {
    font-size: 24px;
    line-height: 29px;
    margin: 11px 15px 28px 0;
  }
  #sec6 .blk .col .b-note small {
    font-size: 20px;
  }
  #sec6 .blk .col .b-note small span {
    font-size: 18px;
  }
  #sec6 .blk .col .box {
    margin: 0;
    border: 1px solid #000;
    padding: 16px 17px 18px 0px;
  }
  #sec6 .blk .col .box .ttl {
    font-size: 25px;
    line-height: 39px;
  }
  #sec6 .blk .col .box .sttl,
  #sec6 .blk .col .box ul {
    font-size: 20px;
    line-height: 38px;
  }
  #sec6 .blk .col .box .sttl {
    margin: -2px 0 12px;
  }
  #sec6 .blk .col .note {
    line-height: 28px;
    margin: 11px -5px 0 0;
  }
  #sec6 .blk .col2 {
    padding-bottom: 22px;
  }
  #sec6 .blk .col2 .mark {
    left: 37px;
  }
  #sec6 .blk .col2 .b-note {
    margin: 9px 13px 29px 0;
  }
  #sec6 .blk .col2 .box {
    padding: 14px 15px 16px 0px;
  }
  #sec6 .blk .col2 .box .sttl {
    margin: -1px 0 12px;
  }
  #sec6 .blk .col3 {
    padding-top: 45px;
  }
  #sec6 .blk .col3 .box {
    padding-bottom: 14px;
  }
  #sec6 .blk .col4 {
    padding: 45px 57px 26px;
  }
  #sec6 .blk .col4 .b-note {
    margin: 9px 14px 62px 0;
  }
  #sec6 .blk .col4 .box {
    padding: 14px 17px 15px 0;
  }
  #sec6 .last-note {
    line-height: 38px;
    margin: -71px 0 0 -27px;
  }
}

#sec7 {
  background-image: url("../img/course/s7-bg.jpg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: 20% 50%;
  padding: 20vw 0 40vw;
}

#sec7 h2 {
  width: 41%;
}

@media only screen and (min-width: 768px) {
  #sec7 {
    background-position: 50%;
    padding: 147px 0 338px;
  }
  #sec7 h2 {
    width: auto;
    margin-left: -1px;
  }
}

#sec8 {
  padding: 20vw 0;
}

#sec8 .img {
  margin-bottom: 8vw;
}

#sec8 h2 {
  font-size: 6.5vw;
  line-height: 10vw;
  letter-spacing: 0.16em;
  margin-bottom: 2vw;
}

#sec8 .price {
  color: #892d2c;
  font-size: 5.8vw;
  line-height: 8vw;
  letter-spacing: 0.1em;
}

#sec8 .price small {
  font-size: 5vw;
}

#sec8 .txt {
  position: relative;
  margin-top: 5vw;
  padding-top: 6vw;
}

#sec8 .txt:before {
  content: "";
  height: 1px;
  background: #69645c;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
}

@media only screen and (min-width: 768px) {
  #sec8 {
    padding: 117px 0 60px;
  }
  #sec8 .img {
    width: 706px;
    float: left;
    margin: 0 0 0 -75px;
  }
  #sec8 .col {
    width: 418px;
    float: right;
    margin: 50px -77px 0 0;
  }
  #sec8 h2 {
    font-size: 39px;
    line-height: 62px;
    letter-spacing: 0.17em;
    margin: 0 0 19px -4px;
  }
  #sec8 h2 small {
    font-size: 30px;
    margin-left: -10px;
  }
  #sec8 .price {
    font-size: 33px;
    line-height: 38px;
  }
  #sec8 .price span {
    font-size: 25px;
  }
  #sec8 .price small {
    font-size: 22px;
  }
  #sec8 .txt {
    margin-top: 32px;
    padding-top: 31px;
  }
  #sec8 .txt:before {
    height: 2px;
    background: #abaaa8;
  }
}

#sec9 {
  padding-bottom: 20vw;
}

#sec9 .img {
  margin-bottom: 8vw;
}

#sec9 h2 {
  font-size: 6.5vw;
  line-height: 10vw;
  letter-spacing: 0.16em;
  margin-bottom: 2vw;
}

#sec9 .price {
  color: #892d2c;
  font-size: 5.8vw;
  line-height: 8vw;
  letter-spacing: 0.1em;
}

#sec9 .price small {
  font-size: 5vw;
}

#sec9 .txt {
  position: relative;
  margin-top: 5vw;
  padding-top: 6vw;
}

#sec9 .txt:before {
  content: "";
  height: 1px;
  background: #69645c;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
}

@media only screen and (min-width: 768px) {
  #sec9 {
    padding-bottom: 157px;
  }
  #sec9 .img {
    width: 705px;
    float: right;
    margin: 0 -70px 0 -180px;
  }
  #sec9 .col {
    width: 600px;
    float: left;
    position: relative;
    z-index: 1;
    margin: 38px 0 0 -68px;
  }
  #sec9 h2 {
    font-size: 39px;
    line-height: 65px;
    letter-spacing: 0.21em;
    margin: 0 -30px 18px 102px;
  }
  #sec9 h2 small {
    font-size: 30px;
  }
  #sec9 h2 span {
    color: #fff;
  }
  #sec9 h2 q {
    letter-spacing: 0.09em;
    margin-left: -6px;
  }
  #sec9 h2 q small {
    letter-spacing: 0.28em;
  }
  #sec9 .price {
    font-size: 33px;
    line-height: 40px;
    margin-left: 104px;
  }
  #sec9 .price span {
    font-size: 25px;
  }
  #sec9 .price small {
    font-size: 22px;
    letter-spacing: 0.1em;
  }
  #sec9 .txt {
    width: 410px;
    margin-top: 27px;
    padding: 27px 0 0 104px;
    line-height: 38px;
  }
  #sec9 .txt:before {
    height: 2px;
    background: #abaaa8;
  }
}

#sec10 {
  position: relative;
  z-index: 0;
  padding: 0 5% 20vw;
}

#sec10:before {
  content: "";
  width: 100%;
  height: 50vw;
  background-image: url("../img/course/s10-dc.jpg");
  background-repeat: no-repeat;
  background-size: 100%;
  position: absolute;
  left: 0;
  top: -10vw;
  z-index: -1;
}

#sec10 h2 {
  width: 90%;
  margin: 0 auto;
}

#sec10 .col {
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  margin-top: 8vw;
  padding: 8vw 0;
}

#sec10 .col .btn {
  width: 30%;
  margin: 0 auto;
}

#sec10 .coll {
  background-image: url("../img/course/s10-bg1.jpg");
}

#sec10 .colr {
  background-image: url("../img/course/s10-bg2.jpg");
}

@media only screen and (min-width: 768px) {
  #sec10 {
    padding: 0 0 128px;
  }
  #sec10:before {
    width: 803px;
    height: 323px;
    left: calc(50% - 524px);
    top: -106px;
  }
  #sec10 h2 {
    width: 100%;
  }
  #sec10 .blk {
    max-width: 1332px;
    width: 96%;
    margin: 74px auto 0;
  }
  #sec10 .col {
    width: 49%;
    margin-top: 0;
    padding: 25px 0 18px;
  }
  #sec10 .col .btn {
    width: 100%;
  }
}

#sec11 {
  padding: 10vw 0 15vw;
}

#sec11 h2 {
  width: 80%;
  margin: 0 auto 5vw;
}

#sec11 .note {
  margin-bottom: 8vw;
}

#sec11 .blk .col .item {
  margin-bottom: 30px;
}

#sec11 .blk .col .item h3 {
  font-size: 17px;
  margin-bottom: 20px;
}

#sec11 .blk .col .item .sttl {
  margin-bottom: 10px;
}

#sec11 .blk .col .item dl {
  width: 100%;
  display: table;
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
  margin-bottom: 5px;
  padding-bottom: 2px;
}

#sec11 .blk .col .item dl dt {
  display: table-cell;
}

#sec11 .blk .col .item dl dd {
  width: 90px;
  display: table-cell;
  vertical-align: bottom;
  text-align: right;
}

#sec11 .blk .col .box {
  background-image: url("../img/shared/bg.jpg");
  padding: 10vw 8%;
  position: relative;
  margin-top: 10vw;
}

#sec11 .blk .col .box:before {
  content: "";
  border: 1px solid #c7c6c4;
  position: absolute;
  left: 3vw;
  right: 3vw;
  top: 3vw;
  bottom: 3vw;
}

#sec11 .blk .col .box h4 {
  font-size: 4.5vw;
  line-height: 6vw;
}

#sec11 .blk .col .box .txt {
  margin: 3vw 0 5vw;
}

#sec11 .blk .col .box .btn-link a {
  font-size: 3.5vw;
  letter-spacing: 0.1em;
  padding: 2.37vw 10% 2.5vw 0;
}

@media only screen and (min-width: 768px) {
  #sec11 .blk .col .item dl dt {
    padding: 10px 0 10px 0;
    line-height: 1.5;
  }

  #sec11 {
    padding: 40px 0 89px;
  }
  #sec11 h2 {
    width: 100%;
    margin: 0 auto 43px;
  }
  #sec11 .note {
    margin: 0 0 62px 10px;
    line-height: 38px;
  }
  #sec11 .blk .col {
    width: 470px;
  }
  #sec11 .blk .col .item {
    margin-bottom: 43px;
  }
  #sec11 .blk .col .item h3 {
    font-size: 23px;
    margin-bottom: 37px;
  }
  #sec11 .blk .col .item h3.mb39 {
    margin-bottom: 39px;
  }
  #sec11 .blk .col .item .sttl {
    font-size: 17px;
    margin-bottom: 3px;
  }
  #sec11 .blk .col .item dl {
    font-size: 17px;
    line-height: 38px;
    margin-bottom: -1px;
    padding-bottom: 0px;
  }
  #sec11 .blk .col .item dl dd {
    width: 125px;
    padding-right: 5px;
  }
  #sec11 .blk .col .box {
    width: 460px;
    padding: 49px 0 49px 2px;
    margin: 52px 0 0 5px;
  }
  #sec11 .blk .col .box:before {
    left: 16px;
    right: 16px;
    top: 16px;
    bottom: 16px;
  }
  #sec11 .blk .col .box h4 {
    font-size: 23px;
    line-height: 20px;
  }
  #sec11 .blk .col .box .txt {
    font-size: 17px;
    line-height: 38px;
    margin: 26px 0 24px;
  }
  #sec11 .blk .col .box .btn-link {
    width: 379px;
    margin: 0 auto;
  }
  #sec11 .blk .col .box .btn-link a {
    font-size: 16px;
    letter-spacing: 0.2em;
    padding: 10px;
  }
}

#sec6 .wrap:before {
  content: "";
  width: 1px;
  height: 800px;
  background: #6b6a69;
  position: absolute;
  right: -310px;
  top: -151px;
  transform: rotate(-34deg);
  z-index: 0;
}

.menu_img {
  margin-top: 20px;
}

@media only screen and (min-width: 768px) {
  .menu_img {
    margin-left: 17px;
  }
}

.sec6_co_txt {
  display: block;
  margin-bottom: 50px;
  justify-content: center;
}

.sec6_co_txt > p {
  display: flex;
  align-items: center;
  padding: 0 10px 10px 10px;
}

.ac_menu_oya {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

.ac_menu {
  display: flex;
  justify-content: center;
  margin-bottom: 100px;
  border-bottom: 1px solid;
  border-top: 1px solid;
  width: 90%;
  padding: 10px;
  align-content: center;
}

.ac_pa {
  padding: 40px 0 0px 0 !important;
}

summary {
  display: flex;
  justify-content: center;
  align-items: center;
}

details summary::before {
  content: url(../img/course/ac_open.png);
  margin-right: 15px;
  margin-top: 5px;
}

details[open] summary::before {
  content: url(../img/course/ac_close.png);
}

details[open] {
  max-height: 2000px;
  transition: all 1.5s;
}

details {
  max-height: 4em;
  transition: all 1.5s;
  overflow: hidden;
}

summary {
  cursor: pointer;
}

.ac_tit {
  width: 80% !important;
  height: 80% !important;
}

.ac {
  padding: 0 !important;
  margin: 0 0 0 0 !important;
}

@media only screen and (min-width: 768px) {
  .ac_menu {
    width: 1010px;
    padding: 20px;
  }

  .sec6_co_txt > p {
    display: flex;
    align-items: center;
    padding: 0 25px 0px 0px;
  }

  .sec6_co_txt {
    display: flex;
    margin-bottom: 100px;
    justify-content: center;
  }

  details summary::before {
    margin-right: 30px;
  }

  .ac_tit {
    width: 510px !important;
    height: 39px !important;
  }

  .ac {
    width: 510px;
    padding: 26px !important;
    margin: 0 0 0 0 !important;
  }

  #sec11 .ac_blk {
    margin: 0 28px;
  }
}