body {
    text-align:center;
    margin-top:5%;
    margin-bottom:5%;
    margin-left:auto;
    margin-right:auto;
    height:500px;
    width:650px;
}

section {
    line-height: 1.5;
}

footer {
    margin-top:20px;
}

button {
    margin-top:10px;
    margin-bottom:10px;
}

main {
    font-size: large;
}