@charset "UTF-8";

.firstview{
  padding: 150px 0 50px 0;
  margin: 0 auto;
  background-image: url(image/bg_img03.png);
  height: 500px;
}

.firstview .txt{
  max-width: 1200px;
  padding: 0;
margin: 0 auto;
text-align: center;
}

section{
  max-width: 1200px;
  padding: 100px 0 50px 0;
  margin: 0 auto;
}

@media screen and (max-width: 1200px){
  .firstview{
    padding: 170px 30px 50px 30px;
    height: 480px;
}
.firstview h2{
  padding-bottom: 15px;
}
section{
  padding: 50px 30px;
}}
@media screen and (max-width: 768px){
  .firstview{
    padding: 170px 30px 50px 30px;
    height: 430px;
  }}
  @media screen and (max-width: 430px){

    .firstview{
      padding: 180px 20px 20px 20px;
      height: 430px;
    }
  
    section{
      padding: 40px 20px 40px 20px;
    }}