body{
    background-color: burlywood;
}

header h1{
    text-align: center;
    color: darkcyan;
}

main{
    width: 70%;
    margin: 10px auto;
}

ol{
    list-style-type: square;
}

ol ol{
    list-style-type: circle;
}

ul{
    list-style-type: armenian;
}

ul ul{
    list-style-type: disc;
}

dt{
    color: darkolivegreen;
}

dd{
    color: brown;
}