.tac {
  text-align: center;
}

.environment_box {
  margin-bottom: 60px;
  font-size: 16px;
}

.environment_box p {
  margin-bottom: 20px;
}

.environment_box .environment_margin {
  margin-bottom: 40px;
}

@media only screen and (max-width: 768px) {
  .environment_box .environment_margin {
    margin-bottom: 30px;
  }
}

.environment_box .environment_mid_head {
  margin-top: 60px;
  font-weight: bold;
}

@media only screen and (max-width: 768px) {
  .environment_box {
    margin-bottom: 40px;
    font-size: 14px;
  }
}

.environment_box .p25 {
  width: 25%;
}

@media only screen and (max-width: 768px) {
  .environment_box .p25 {
    width: 100%;
  }
}

.environment_box .p33 {
  width: 33.333%;
}

@media only screen and (max-width: 768px) {
  .environment_box .p33 {
    width: 100%;
  }
}

.environment_box .p50 {
  width: 50%;
}

@media only screen and (max-width: 768px) {
  .environment_box .p50 {
    width: 100%;
  }
}

.environment_box .p75 {
  width: 75%;
}

@media only screen and (max-width: 768px) {
  .environment_box .p75 {
    width: 100%;
  }
}

.environment_box .environment_img {
  text-align: center;
}

.environment_box .environment_img.w500 img {
  max-width: 500px;
  width: 100%;
}

@media only screen and (max-width: 768px) {
  .environment_box .environment_img.w500 img {
    max-width: 414px;
  }
}

.environment_box .environment_img.w600 img {
  max-width: 600px;
  width: 100%;
}

@media only screen and (max-width: 768px) {
  .environment_box .environment_img.w600 img {
    max-width: 414px;
  }
}

.environment_box .environment_img img {
  max-width: 100%;
}

.environment_box .environment_desc {
  margin-bottom: 10px;
}

.environment_box .environment_ctn_box {
  margin-bottom: 60px;
}

@media only screen and (max-width: 768px) {
  .environment_box .environment_ctn_box {
    margin-bottom: 40px;
  }
}

.environment_box .environment_ctn_box .environment_column_figure {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

@media only screen and (max-width: 1080px) {
  .environment_box .environment_ctn_box .environment_column_figure {
    max-width: 680px;
  }
}

.environment_box .environment_ctn_box .environment_column_figure figure {
  width: calc(33.333% - 13px);
  margin: 0 0 20px 0;
  text-align: center;
}

@media only screen and (max-width: 768px) {
  .environment_box .environment_ctn_box .environment_column_figure figure {
    width: 100%;
  }
}

.environment_box .environment_ctn_box .environment_column_figure figure figcaption {
  margin-top: 10px;
  font-size: 14px;
}

.environment_box .environment_ctn_box .environment_column {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -10px;
  justify-content: center;
}

.environment_box .environment_ctn_box .environment_column.-v3 {
  align-items: center;
  justify-content: flex-start;
}

.environment_box .environment_ctn_box .environment_column.-v3 p {
  margin-bottom: 10px;
}

.environment_box .environment_ctn_box .environment_column.w960 {
  max-width: 960px;
  width: 100%;
  margin: 0 auto;
}

.environment_box .environment_ctn_box .environment_column.-v2 .environment_column_img img {
  width: auto;
  max-height: 380px;
}

@media only screen and (max-width: 1120px) {
  .environment_box .environment_ctn_box .environment_column.-v2 .environment_column_img img {
    max-height: 300px;
  }
}

@media only screen and (max-width: 1120px) and (max-width: 320px) {
  .environment_box .environment_ctn_box .environment_column.-v2 .environment_column_img img {
    max-height: none;
    width: 100%;
  }
}

@media only screen and (max-width: 1120px) {
  .environment_box .environment_ctn_box .environment_column.-v2 .environment_column_img.p50 {
    width: 100%;
  }
}

.environment_box .environment_ctn_box .environment_column.-v2 .environment_column_txt {
  padding: 0;
  text-align: left;
}

.environment_box .environment_ctn_box .environment_column .environment_column_img {
  padding: 0 10px;
  text-align: center;
}

@media only screen and (max-width: 768px) {
  .environment_box .environment_ctn_box .environment_column .environment_column_img {
    margin-bottom: 20px;
  }
}

.environment_box .environment_ctn_box .environment_column .environment_column_img img {
  width: 100%;
}

@media only screen and (max-width: 768px) {
  .environment_box .environment_ctn_box .environment_column .environment_column_img img {
    max-width: 320px;
  }
}

.environment_box .environment_ctn_box .environment_column .environment_column_txt {
  padding: 0 10px;
}