.banner__section{
  background-image: linear-gradient(rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.3)), url(../image/banner-bg.png);   
}
.heute__section-img1{
  background-image: url(../image/01.png);
}
.heute__section-img2{
  background-image: url(../image/02.png);
}
.heute__section-img3{
  background-image: url(../image/03.png);
}