li a{
    font-weight: bold;
}

h2 {
    font-family: Arial;
}

nav ol{
    margin:0;
    padding:0;
}

nav li{
    display:inline-flex;


    padding:10px;
    border:1px solid #000;

    border-radius:20px;
}

nav li:hover{
    background-color: #a9a9a9;
}

nav a{
    text-decoration: none;
}