body{
    padding: 0;
    margin: 0;
    background-color: gray;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.mitte {
    display: flex;
    justify-content: center;
    align-items: center;
}
#SushiRestaurant {
    width: 100%;
    height: 600px;
}
#SushiRestaurant img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
@media screen and (min-width: 800px) {
    #SushiRestaurant {
        height: 600px;
    }
}
footer ul, nav ul {
    list-style: none;
    padding-top: 24px;
    padding-bottom: 24px;
}
footer ul li a, nav ul li a {
    font-weight: 600;
    padding: 24px;
}
section {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 16;
    padding-right: 16;
}
nav {
    position: sticky;
    top: 0;
    backdrop-filter: blur(6px);
}