nav ul li {
           display: inline-block;
            margin-right: 125px;
            border-radius: 10px;
            text-align: center;
        }

nav ul li a {
    text-decoration: none;
    color: black;
}

nav ul li a:hover {
    display: block;
    position: relative;
    bottom: 3px;
    rotate: 180deg;
}