body{
    background-color:lightblue  ;
    font-family: Arial, Helvetica, sans-serif;
}
nav{
    background-color: white;
}
ul{
    display: flex;
    list-style-type: none;
    margin: 0;
    padding: 0;
    justify-content: center;
}
li{
    padding: 15px;

}
li:hover{
    background-color:black;
    color: white;
}