.header_img {
    background-image: url("../img/header_bkimg.png");
    background-repeat: no-repeat;
    background-size: cover;
    text-align: center;
    position: relative;
}

.heade_main_img {
    width: 1200px;
    margin: auto;
}
.header_img .button {
    display: inline-block;
    position: absolute;
    left: 45%;
    bottom: 70px;
    margin: 0;
    width: 45%;
}


img {
    width: 100%;
}
section.seminar,section.worries,section.profile,section.company{
    margin-bottom: 70px;
}
section.profile {
    margin-top: 100px;
}
picture.img_contents {
    display: block;
    margin: auto;
    width: 900px;
}
.button {
    width: 45%;
    margin: 40px auto 70px;
}
.button a img {
    transition: all 0.3s;
}
.button a:hover img {
    opacity: 0.7;
}
h2.title {
    margin: 0 0 70px 0;
}

@media screen and (min-width: 1200pxpx) {
.heade_main_img {
    width: 1200px;
    margin: auto;
}
}
@media screen and (max-width: 767px) {
   div#wrapper {
    width: 100%;
}
.heade_main_img {
    width: 100%;
}
.header_img .button {
    margin: 0;
    bottom: 20px;
    width: 50%;
}
picture.img_contents {
    width: 100%;
    display: block;
    margin: auto;
}
h2.title {
    margin: 0 0 20px 0;
}
section.seminar, section.company {
    margin-bottom: 30px;
}
section.seminar,section.worries,section.profile,section.company{
    margin-bottom: 30px;
}
section.profile {
    margin-top: 0px;
}

section.worries{
    margin-bottom: 0px;
}
.header_button {
    left: 43%;
    bottom: 8px;
    width: 54%;
}
h2 {
    margin-bottom: 20px;
}
.button {
    width: 70%;
    margin: 15px auto 30px;
}
}
.btn_block{
margin: 100px 0px 50px 0;
}
@media screen and (max-width: 767px) {
  .btn_block{
  margin: 60px 0px 30px 0;
  }
}
.btn_block.header{
position: absolute;
    left: 50%;
    bottom: 0;
    min-width:unset;
}
@media screen and (max-width: 767px) {
  .btn_block.header {
    display:none;
  }
}
.btn_block.header .popup{
    position: absolute;
    z-index: 1;
    display: inline-block;
    width: 450px;
    top: -23%;
    left: calc(50% - 225px);
    cursor: pointer;
}

@media screen and (max-width: 767px) {
.fixed_btn{
display: none !important;
}
}