body::before {
    content: '';
    width: 100%;
    position: absolute;
    height: 100vh;
    background: linear-gradient(to top, rgba(255, 255, 255, 0.7) 0%, rgba(255, 255, 255, 0.7) 100%), url(../img/bg.jpg);
    background-size: cover;
    background-position: center;
    position: fixed;
    z-index: -99;
}

* {
    font-family: "Noto Serif JP", serif;
}

.mainvisual-under-logo {
    height: 100%;
    width: 70%;
}

.ico-tw a {
    box-shadow: none;
}