body {
    /* CODE GOES HERE */
}

#box
{
    background-color: pink;
    height:500px;
    padding:40px;
    margin:40px;
    border:10px solid #333
}

#box2
{
    background-color: lightgreen;
    height:300px;

}


#box3
{
    background-color: yellow;
    height:100px;

}

img
{
    width:200px;
    display:block;
    margin-left:auto;
    margin-right:auto;
    

}