* {
		box-sizing: border-box;
		margin: 0;
		font: normal 24px monospace;
		vertical-align: top;
}

html, body { height: 100% }

body {
		min-width: 620px;
}

.half { height: 50% }

.half.first { padding-bottom: 28px }
.half.last  { padding-top: 28px }

textarea {
		width: 100%;
		height: 100%;
		padding: 8px;
		border: 0;
		outline: 0;
		resize: none;
}

.first textarea { padding-bottom: 0 }
.last  textarea { padding-top:    0 }

.middle {
		position: absolute;
		top: 50%;
		width: 100%;
		margin-top: -23.5px;
		text-align: center;
}

#go { padding: 8px; }

.middle iframe {
		transform: scale(1.714);
		transform-origin: top left;
		margin: 0 59.142px 0 12px;
}