#mainVisual .bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #0000008f;
  z-index: 1;
}

h2 {
  padding-bottom: 0;
}

@media screen and (max-width: 737px) {
  section {
    padding: 50px 0;
  }
}

section h2 {
  -webkit-transform: translateY(0);
          transform: translateY(0);
}

@media screen and (max-width: 737px) {
  section h2 {
    margin-top: 25px;
  }
}

section .container {
  max-width: 90vw;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
}

@media screen and (max-width: 737px) {
  section .container {
    max-width: 100vw;
    -ms-flex-wrap: wrap;
        flex-wrap: wrap;
    padding: 0 5vw;
    -webkit-box-sizing: border-box;
            box-sizing: border-box;
  }
}

section .container .bg-img {
  width: 50%;
  height: 450px;
  background-position: center center;
  background-size: cover;
  background-repeat: no-repeat;
}

@media screen and (max-width: 737px) {
  section .container .bg-img {
    width: 100%;
    height: 300px;
  }
}

section .container .txt-wrapper {
  width: 50%;
  padding: 0 30px;
}

@media screen and (max-width: 737px) {
  section .container .txt-wrapper {
    width: 100%;
    padding: 0;
  }
}

section .container .txt-wrapper h2 img {
  width: 115px;
  margin-left: 30px;
  vertical-align: middle;
}

@media screen and (max-width: 737px) {
  section .container .txt-wrapper h2 img {
    display: block;
    margin: 10px auto 0 auto;
  }
}

.flexBox {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: start;
      -ms-flex-align: start;
          align-items: flex-start;
  margin: 30px auto;
}

.flexBox p {
  width: calc(100% - 100px);
  padding-left: 15px;
}

section#introduce .container {
  margin-left: 0;
}

section#introduce .container .bg-img {
  background-image: url("../images/sdgs01.jpg");
}

section#about::before {
  display: none;
}

section#about .container {
  margin-right: 0;
}

section#about .container .bg-img {
  background-image: url("../images/sdgs05.jpg");
}

section#about .bg-img {
  -webkit-box-ordinal-group: 3;
      -ms-flex-order: 2;
          order: 2;
}

@media screen and (max-width: 737px) {
  section#about .bg-img {
    -webkit-box-ordinal-group: 2;
        -ms-flex-order: 1;
            order: 1;
  }
}

section#about .txt-wrapper {
  -webkit-box-ordinal-group: 2;
      -ms-flex-order: 1;
          order: 1;
}

@media screen and (max-width: 737px) {
  section#about .txt-wrapper {
    -webkit-box-ordinal-group: 3;
        -ms-flex-order: 2;
            order: 2;
  }
}