html {
    background-image: url("images/starfield.gif");
    background-attachment: fixed;
}

 body {
    background-color: #DDF6FE;
    display: grid;
    padding: 20px;
    border-radius: 10px;
    width: 80%;
    margin: 50px auto;
    border: 5px solid dodgerblue;
}

 h1 {
    font-family: 'Courier New', Courier, monospace;
    font-weight: 400;
}

 h2 {
    display: inline-block;
}

header {
    text-align: center;
}

 nav {
    text-transform: uppercase;                
}

footer {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-areas: "footer1 footer2 footer3";
    grid-column-gap: 0px;
    grid-row-gap: 0px;
    border-top: 1px solid #999;
    }

.footer1 { grid-area: footer1; text-align: center;}
.footer2 { grid-area: footer2; text-align: center;}
.footer3 { grid-area: footer3; text-align: center;}

@media (max-width: 768px) {
    footer {
        grid-template-areas: 
        "footer1"
        "footer2"
        "footer3";
        grid-template-columns: 1fr;
    }
}

 .counter {
    background-color: black;
    font-size: 32px;
    color: lime;
    padding: 5px;
    font-family:'Courier New', Courier, monospace;
}