html, body { margin: 0; padding: 0; height: 100%; font-family: Arial, Helvetica, sans-serif; font-size: 10px; color: #000; }
body { background: #fff; }
#spring { width: 800px; height: 600px; position: absolute; top: 50%; margin-top: -300px; left: 50%; margin-left: -400px; }
a { color: #888; text-decoration: none; outline: none; }
a:hover { text-decoration: underline; }
a img { border: none; outline: none; }
:focus { outline: none; }