header {
    /* position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: #fff;
    z-index: 100; */
}
.header_box {
    padding-left: 15vw;
    /* width: calc(100% - 48px);
    max-width: 1000px;
    margin: 0 auto; */
}
.header_box h1 {
    display: flex;
    align-items: center;
    width: 100%;
    height: 82px;
}
.header_box h1 a {
    display: block;
    width: 95px;
    height: auto;
}

@media only screen and (max-width: 750px) {
    .header_box {
        width: 100%;
        padding: 0px 30px;
    }
    .header_box h1 {
        height: clamp(2.563rem, 10.93vw, 5.125rem);
    }
    .header_box h1 a {
        width: clamp(2.563rem, 10.93vw, 5.125rem);
    }
}