.nav-top,
.nav-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1px 0;
    width: 100%;
}

.nav-top {
    background-color: #fafafa;
    border-bottom: 1px solid #e5e5e5;
}

.nav-bottom {
    background-color: #ffffff;
}

.nav-top button,
.nav-bottom button {
    padding: 6px 10px;
    border: none;
    background: #e9e9e9;
    cursor: pointer;
}

.nav-top button:hover,
.nav-bottom button:hover {
    background: #dcdcdc;
}

.nav-top a,
.nav-bottom a {
    flex: 1;
    text-align: center;
    font-weight: bold;
}