#rund {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.center {
    width: 75%;
    margin: auto;
}
.aran {
    display: flex;
    flex-flow:wrap;
}
body {
    background-color: #633b446b;

}

.navbar {
    display: flex;
    margin: 0.5rem;
}

.nav-link {
    padding: 1rem;
}