html { 
    background-color: orange ;
    padding: 10px;
    margin:10px;
    border:4px solid black;
}

body {

    background-color: #ff0;
    padding: 10px;
    margin: 10px;
    border:1px solid black;
}
section{
    background-color: #ff3;
    padding:10px;
    margin:10px;
    border:1px solid black;
    display: flex;
    text-align: center;
}