body{
background-color: lightgrey;
}
header{
    background-color: lightblue;
    color: aliceblue;
    height: 70px;
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
}
header > h1{
    background-color: cadetblue;
}
nav{
    background-color: cadetblue;
    height: 30px;
    text-align: center;
}
nav > a{
    background-color: darkslategray;
    color: aliceblue;
}
main{
    background-color: cadetblue;
    font-family: Arial, Helvetica, sans-serif;
}
main > p{
    background-color: lightblue;
}
main > p > abbr{
    background-color: crimson;
    color: aliceblue;
    font-size: 1.5rem;
    font-family: 'Times New Roman', Times, serif;
}
footer{
    background-color: darkslategrey;
    color: aliceblue;
}