body{
  max-width: none;
}
article{
  max-width: 1100px;
  align-items: center;
  margin: 0 auto;
  position: relative;
}
/*メッセージ*/
#message_reikotop{
  display: block;
  text-align: center;
  margin: 0 20px;
}
#message_reikotop img{
  max-width: 415px;
  height: auto;
  aspect-ratio: 415/25.4;
  margin-top: 45px;
}
#message_reikotop h3{
  font-size: 23px;
  font-weight: bold;
  margin-top: 70px;
}
#message_reikotop p{
  text-align: left;
  max-width: 600px;
  font-size: 17px;
  margin: 0 auto;
  margin-top: 31px;
  margin-bottom: 90px;
  line-height: 24px;
}
/*YouTubeセクション*/
#reiko_youtube{
  background-color: #24407F;
  text-align: center;
}
#reiko_youtube p{
  color: #fff;
  text-align: center;
  font-size: 24px;
}
#reikoyou_text1{
  padding-top: 60px;
  padding-bottom: 60px;
}
iframe.movie{
  width: 90%;
  height: auto;
  aspect-ratio: 16 / 9;
}
#space1{
  height: 50px;
}
/*余白*/
.yohaku{
  height: 110px;
}
/*レスポンシブ対応*/
@media (max-width:599px){
  #kotonohatext{
    width: 280px;
    height: auto;
    aspect-ratio: 415 / 25.4;
    margin-top: 30px;
  }
  #message_reikotop h3{
    font-size: 18px;
    margin-top: 50px;
  }
  #message_reikotop p{
    margin-bottom: 50px;
  }
  #reiko_youtube p{
    font-size: 15px;
  }
  #reikoyou_text1{
    padding-top: 40px;
    padding-bottom: 40px;
  }
}

/*スマホ対応*/
#resp-reikotop{
  display: none;
  width: 100%;
  height: auto;
  aspect-ratio: 375/602.81;
}
@media (max-width:540px){
  #pc-reikotop{
    display: none;
  }
  #resp-reikotop{
    display: block;
  }
  #message_reikotop img{
    width: 90%;
  }

  iframe.movie{
    width: 96%;
  }
}

/*ヘッダー背景*/
.widescreen{display: none;}
@media screen and (min-width:1100px) {
  .widescreen{
    display: block;
  }
  .middlescreen{
    display: none;
  }
  .top-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 679.44px; /* 背景を適用したい高さ */
    background-color: #C20032; /* ここに適用したい背景色を指定 */
    z-index: -1;
  }
}