body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: white;
    margin: 0 auto;
    width: 700px;
    border: 3px solid blue;
    padding: 10px 20px;
}
main {
	overflow: hidden;
}
section {
	float: left;
}
aside {
	float: right;
	margin-top: 1em;
}
h1 {
    color: blue;
}
div {
    margin-bottom: 1em;
}
label {
    display: inline-block;
    width: 7em;
}
input {
    margin-right: 0.5em;
}
span {
    color: red;
}