h1 {
    background-color: rgb(255,0,51);
    color: white;
} 
footer {
    background-color: gray;
    color: white;
    text-align: center;
    padding: 18px;
    margin-top: 42px;
    }
nav {
    background-color: silver;
    gap: 10px;
    padding: 18px;
}
nav a {
    color: red;
    font-weight: bold;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
th, td {
    border: 1px solid #333;
    padding: 10px;
    text-align: left;
}
th {
    background-color: black;
    color: white;
}





header, nav, section, footer
    {
     border: 2px solid #006666;
}

nav a:hover {
    color: black;
    background-color: white;
}

nav a:active {
    color: black;
    background-color: red;
    border: 5px solid #990099;
}

nav a { 
    font-family: Arial, sans-serif;
    background-color: black;
    display: inline;
    border: 1px solid white;
    padding: 1px 20px;
    margin: 2px;
    }