body{
    background-color: beige;
}

header>h1, header>h2{
color: blue;
background-color: paleturquoise;
text-align: center;
font-family: 'Courier New', Courier, monospace;
padding: 0px 20px;
}
header>h1{
    font-size: 3rem;
}
header>h2{
    font-size: 2rem;
}
nav>ul{
    list-style-type: none;
    display: flex;
    flex-direction: column;
}
nav>ul>li{
    width: 100%;
}
nav>ul>li>a{
    background-color: lightgray;
    display: block;
    text-align: center;
    padding: 10px 0px;
    border: black solid 1px;
}
nav>ul>li>a:active{
    background-color: darkgray;
}

main{
    background-color: aquamarine;
}
main>article{
    padding: 10px 15px;
}