body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    width: 550px;
    height: 100vh;
    margin: 0 auto;
    text-align: center;
    font-family: "Zalando Sans SemiExpanded", sans-serif;
    font-optical-sizing: auto;
    font-style: normal;;
}

ul {
    list-style: none;
    display: inline-flex;
}

ul li a{
    padding: 0 10px;
}
ul li a {
    text-decoration: none;
    color: #000;
}
li a:hover {
    background-color: #000;
    color: #fff;
}