.site-header .header-inner > a.search-toggle {
    display: inline-flex;
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    background-image: url("loupe.svg");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 20px 20px;
    font-size: 0;
}