index.css

body {
	font-family: Arial, Helvetica, sans-serif;
	background: white;
	color: black;
	margin: 0;
	padding: 10px;
}

div, p, form, blockquote, h1, h2, h3 {
	box-sizing: border-box;
}

.pagecontent {
	max-width: 800px;
	background: #1EA8B4;
	color: #FFFFFF;
	border-radius: 5px 5px;
	box-shadow: 5px 5px 10px #CCCCCC;
	padding: 15px;
	margin: 10px auto;
}

h1 {
	color: #373F47;
}

p {
	line-height: 1.5em;
	font-size: 1.0em;
}

blockquote, #resultText {
	margin: 20px;
	padding: 20px;
	background: #373F47;
	font-family: "Times New Roman", Times, serif;
	font-style: italic;
	border-radius: 5px 5px;
	font-size: 1.2em;
	line-height: 1.5em;
}

input, select {
	margin-bottom: 5px;
	border: 0;
	border-radius: 3px 3px;
	padding: 3px;
	color: #373F47;
}

input {
	width: 125px;
}

button {
	margin-bottom: 5px;
	border: 0;
	border-radius: 10px 10px;
	padding: 8px;
	background: #373F47;
	color: #FFFFFF;
	font-size: .9em;
}

button:hover {
	color: #373F47;
	background: #FFFFFF;
}

a {
	color: #373F47;
	text-decoration: none;
	font-weight: bold;
}

a:hover, a:active {
	text-decoration: underline;
}

#resetButton {
	margin-right: 10px;
}

.button-area {
	text-align: center;
}

.hidden {
	display: none;
}

.visible {
	visibility: visible;
}