nav a{
    background-color:darkgreen;
    padding:4px solid;
    border-radius:8px violet;
    margin:200px;
    display:auto;
    color:ivory;
    text-decoration:sans-serif;
}

nav a:hover{
    color:ivory;
    background-color:darkgreen;
    border-radius:8px solid violet;
}

table, th, td{
    border: 2px solid green;
    border-collapse:none;
    
}

table{
    margin: 30px auto;
    border-collapse:collapse;
}

body{
    background-color:ivory;
}

h1{
    text-align:center;
    font-family:sans-serif;
    color:green;
}

th{
    background-color:lightgreen;
}