body {
    background-color: #e3e3e3; /* Ihre Wunschfarbe */
}

.site-header .grid-child {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-banner img {
    height: 120px;
    object-fit: contain;
    margin-left: 20px;
}