header {
    width: 100%;
    height: 80px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-evenly;
    position: sticky;
    top: 0;
    background-color: white;
    z-index: 99;
}

header>.menu>ul {
    display: flex;
    flex-direction: row;
    list-style: none;
}

header>.menu>ul>li>a {
    padding: 10px;
    color: black;
    text-decoration: none;
}