.s_title {
    background-image: url("../image/semiconductor5.png");
    background-size: 536px 84px;
}
.product_one {
    background-image: url("https://energy01.oss-cn-shanghai.aliyuncs.com/upload/3A/web_static/semiconductor4.png");
    background-size: 1124px 350px;
}
.s_one {
    height: 350px;
}