body#phpbb > div.wrap > div#page-header > div.headerbar{
    background-color: transparent;
    background-image: none;
}

body#phpbb > div.wrap > div#page-header > div.headerbar > div.inner{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

body#phpbb > div.wrap > div#page-header > div.headerbar > div.inner > *{
    float: none;
    display: flex;
    justify-content: center;
}

body#phpbb > div.wrap > div#page-header > div.headerbar > div.inner > div#site-description > a#logo > span.site_logo {
    background-image: url("./img/forumheader.jpg");
    width: 475px;
    height: 70px;
}

@media screen and (max-width: 700px) {
    a.logo{
        display: block;
    }

    body#phpbb > div.wrap > div#page-header > div.headerbar > div.inner > div#site-description > a#logo > span.site_logo {
        width: 300px;
        height: 45px;
        background-size: contain;
    }
}