ul {
    list-style-type: none;
    margin: 0;
    padding: 0;
    background-color: lightgrey;
}

ul li {
    padding: 14px 0;
    display: inline-block;
}

ul li a {
    padding: 14px 19px;
    text-decoration: none;
    color: black;
}

ul li a:hover {
    background-color: gray;
}

h3 {
    margin-top: 8px;
}

h1 {
    margin-top: 8px;
}