@charset "UTF-8";

body {
    margin: 2px auto;
    width: 80%;
}

li {
    list-style-type: none;
    width: 8em;
    border: 1px solid black;
    background: aquamarine;
    text-align: center;
    margin: 0 .5em;
    height: 1.5em;
    padding: .5em;

}

ul {
    display: flex;
    justify-content: center;
}

li a {
    text-decoration: none;
    display: block;
}

li:hover {
    background-color: chartreuse;

}