@charset "UTF-8";

div.top-image {
  height: 40vh;
  margin-top: 60px;
  /*ヘッダーの高さ分*/
  display: flex;
  /*テキスト中央寄せ用*/
  align-items: center;
  /*テキスト中央寄せ用*/
  text-align: center;
  /*テキスト中央寄せ用*/
  justify-content: center;
  /*テキスト中央寄せ用*/
  background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url(../img/index-section3.webp);
  background-size: cover;
}

section.background-image-1 {
  max-width: 1200px;
  height: 300px;
  margin: 0 auto;
  background-image: linear-gradient(rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.25) 30% 70%, rgba(0, 0, 0, 1.0) 100%), url(../img/technology-section1.webp);
  background-size: cover;
  background-position: center;
}

section.background-image-2 {
  max-width: 1200px;
  height: 300px;
  margin: 0 auto;
  background-image: linear-gradient(rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.25) 30% 70%, rgba(0, 0, 0, 1.0) 100%), url(../img/technology-section2.webp);
  background-size: cover;
  background-position: center;
}

section.background-image-3 {
  max-width: 1200px;
  height: 300px;
  margin: 0 auto;
  background-image: linear-gradient(rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.25) 30% 70%, rgba(0, 0, 0, 1.0) 100%), url(../img/technology-section3.webp);
  background-size: cover;
  background-position: center;
}

/*PCレスポンシブデザイン*/
@media screen and (min-width: 1280px) {

  section.background-image-1 {
    background-image: linear-gradient(0.25turn, rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.1) 15% 85%, rgba(0, 0, 0, 1.0) 100%), linear-gradient(rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.1) 15% 85%, rgba(0, 0, 0, 1.0) 100%), url(../img/technology-section1.webp);
  }

  section.background-image-2 {
    background-image: linear-gradient(0.25turn, rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.1) 15% 85%, rgba(0, 0, 0, 1.0) 100%), linear-gradient(rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.1) 15% 85%, rgba(0, 0, 0, 1.0) 100%), url(../img/technology-section2.webp);
  }

  section.background-image-3 {
    background-image: linear-gradient(0.25turn, rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.1) 15% 85%, rgba(0, 0, 0, 1.0) 100%), linear-gradient(rgba(0, 0, 0, 1.0) 0%, rgba(0, 0, 0, 0.1) 15% 85%, rgba(0, 0, 0, 1.0) 100%), url(../img/technology-section3.webp);
  }
}