body{
    font-family:Arial,Helvetica,sans-serif;
}

.navbar-brand img{
    max-width:320px;
    height:auto;
}
/* ===== MS18 Header ===== */

.container-header{
    background:#ffffff;
    background-image:none;
}

.container-header .navbar-brand img{
    max-width: 500px !important;
    height: auto;
}

/* Menü yazıları */
.container-header .metismenu > li > a{
    color:#0b4f8a;
    font-weight:600;
}

/* Menü üzerine gelince */
.container-header .metismenu > li > a:hover{
    color:#0085c7;
}

/* Aktif menü */
.container-header .metismenu .active > a{
    color:#0085c7;
}
/* Menü yazılarını siyah yap */
.container-header .mod-menu > li > a,
.container-header .metismenu > li > a,
.container-header .navbar-nav .nav-link{
    color:#000 !important;
}

/* Aktif menü */
.container-header .metismenu .active > a,
.container-header .navbar-nav .active > .nav-link{
    color:#0b5ed7 !important;
}
/* Tüm üst menü bağlantıları */
.container-header a,
.container-header .mod-menu a,
.container-header .metismenu a,
.container-header .navbar-nav .nav-link{
    color:#0b4f8a !important;
}

/* Hover */
.container-header a:hover,
.container-header .mod-menu a:hover,
.container-header .metismenu a:hover{
    color:#0085c7 !important;
}
/* Ana menü yazıları */
.container-header .mod-menu__heading,
.container-header .mod-menu__heading:link,
.container-header .mod-menu__heading:visited,
.container-header .mod-menu__heading:hover,
.container-header .mod-menu__heading:focus{
    color:#0b4f8a !important;
}
/* Header düzeni */

.container-header .grid-child{
    display:flex;
    flex-direction:column;
    align-items:center;
}

.container-header .navbar-brand{
    margin:0 auto;
}

.container-header .mod-menu{
    justify-content:center;
}
/* Menüyü ortala */
.container-header nav{
    width:100%;
    display:flex;
    justify-content:center;
}

.container-header .mod-menu{
    justify-content:center;
    width:100%;
}
.partner-logo{
    max-width:170px;
    max-height:90px;
    width:auto;
    height:auto;
    object-fit:contain;
    transition:all .3s ease;
    filter:grayscale(10%);
}

.partner-logo:hover{
    transform:scale(1.08);
    filter:none;
}
<style>

.list-group-item{
    transition:.3s;
}

.list-group-item:hover{
    background:#f8fbff;
    transform:translateX(6px);
}

</style>

/* MS18 – Haber görselleri: kesinlikle aynı boyut */
.mod-articles-item .mod-articles-image img {
    width: 100% !important;
    height: 300px !important;
    object-fit: cover !important;
    display: block !important;
}

/* Görsel kutusunun yüksekliğini de sabitle */
.mod-articles-item .mod-articles-image {
    height: 300px !important;
    overflow: hidden !important;
}
/* ===== MS18 – top-b modülleri alt alta ===== */
.container-top-b {
    display: grid !important;
    grid-template-columns: 1fr !important;
    width: 100% !important;
}

.container-top-b > * {
    width: 100% !important;
    min-width: 0 !important;
}
.mod-articles-item .mod-articles-image img {
    ...
}

.mod-articles-item .mod-articles-image {
    ...
}
/* Aktuelles – haber görselleri */
.blog-items .blog-item .item-image img {
    width: 100% !important;
    height: 220px !important;
    object-fit: cover !important;
    display: block !important;
}
/* Startseite – Neuigkeiten başlıkları */
.mod-articles-item .mod-articles-title {
    background: #163B73 !important;
    color: #ffffff !important;
    padding: 8px 12px !important;
    margin: 0 !important;
}

.mod-articles-item .mod-articles-title a {
    color: #ffffff !important;
    text-decoration: none !important;
}

.mod-articles-item .mod-articles-title a:hover {
    color: #ffffff !important;
}
/* Üst menü yazı boyutunu büyütme */
.container-header .mod-menu a,
.container-header .metismenu a,
.container-header .navbar-nav .nav-link {
    font-size: 1.15rem !important; /* İhtiyacınıza göre değeri 18px veya 1.2rem yapabilirsiniz */
}
/* Üst menü yazı boyutunu kesin olarak büyütme */
.container-header ul.menu li a, 
.container-header .mod-menu li a, 
.container-header nav li a {
    font-size: 1.3rem !important;
}
/* Tüm menü elemanlarını ve başlıklarını kapsayacak şekilde büyütme */
.container-header .mod-menu *, 
.container-header ul.menu *, 
.container-header nav * {
    font-size: 1.3rem !important;
}