@media only screen and (min-width: 640px) {
    .contact-box {
        display: inline-block;
    }
}

@media only screen and (min-width: 1024px) {
    #navi-toggle-mobile {
        display: none;
    }
    nav {
        display: none;
    }
    .header-shadow {
        position: fixed;
        top: 83px;
        width: 100%;
        z-index: 1000;
    }
}