article.layer1 h1:after {
    content: "";
    width: 20%;
    height: 100%;
    display: block;
    position: absolute;
    top: 0;
    right: calc((100% - 1100px) / 2);
    background-size: cover;
    background-position: center;
}
article.layer1.search_theme h1:after {
    background-image: url(../img/index/thumb_theme.webp);
}
article.layer1.search_part h1:after {
    background-image: url(../img/index/thumb_part.webp);
}

@media screen and (max-width:900px){
	article.layer1 h1:after {
    right: 15px;
}

}