div .btn_menu {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0px -1px 0px rgba(0, 0, 0, 0.2);
    clear: both;
    cursor: pointer;
    display: block;
    padding: 8px 0px 6px;
    position: relative;
    text-align: center;
    top: 4px;
}

div a.site_title {
    margin: auto;
    float: none;
    text-align: center;
}