body {
    background-color: green;
    margin: 0;
}
header{
    background-color: darkcyan;
    color: white;
    padding: 20px;
    text-align: center;
    font-size: 2rem;
    margin: 0px;

}
h1 {color: aqua}
h2{color: orange}
h3{color: salmon}
p {
    font-family: "Courier New";
}
.div1 {
background-color: purple;
    width: 200px;
    border: 5px dashed orange;
}