body{
    background-color: dodgerblue;
    text-align: center;
}
li{
    margin: 5px;
    padding: 10px;
    width: 200px;
    height: 25px;
    border: 2px solid cornflowerblue;
    border-radius: 10px;
    justify-content: center;
    background-color: deepskyblue;
}
a{
    text-decoration: none;
    color: white;
}
li:hover{
    transition: 0.3s;
    background-color: royalblue;
}
ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    flex-direction: column;
    align-items: center;
}