body:before{
    content:"";
    display:block;
    position:fixed;
    top:0;
    left:0;
    z-index:-1;
    width:100%;
    height:100vh;
    background:url(../img/company/bg_company.jpg) center bottom no-repeat;
    background-size:cover;
}
table {
    background: rgb(255 255 255 / .8);
}

/* ----------------------------------------------

            スマートフォン（ ~600px ）

---------------------------------------------- */

@media screen and (max-width: 600px) {
    body:before{
        background-size:200%;
    }
}