.nav {
    position: fixed;
    width: 100%;
    top: 20px;
    z-index: 100;
}

.nav-inner {
    width: 90%;
    margin: auto;
    background: #fff;

    border-radius: 50px;
    padding: 14px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-center a {
    margin: 0 20px;
    text-decoration: none;
    color: #333;
}

.btn {

    color: #333;
    padding: 12px 14px;

    font-size: 18px;
}



.nav-inner {
    width: 90%;
    margin: auto;

    border: 1px solid #c4c1c1;
    border-radius: 50px;

    transition: 0.3s;
}

.nav-inner:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.nav-center a {
    font-size: 14px;
    color: #555;
    position: relative;
}

/* subtle underline hover */
.nav-center a::after {
    content: "";
    position: absolute;
    width: 0%;
    height: 1px;
    background: #111;
    bottom: -4px;
    left: 0;
    transition: 0.3s;
}

.nav-center a:hover::after {
    width: 100%;
}