.main-header div {
  background-image: url(../images/structure_header_bg.jpg);
  background-position: center bottom
}

.pict-cabinet {
  width: 30%
}

@media screen and (max-width: 900px) {
  .pict-cabinet {
    width: 100%
  }
}

.text-cabinet {
  width: 70%
}

@media screen and (max-width: 900px) {
  .text-cabinet {
    width: 100%;
    margin-top: 1em
  }
}

/* stakaha */
.contents .h3-block:not(:first-child) {
	clear: both;
  margin-top: 30px;
}