body {background: white; color: #FF0; font-size: large;
text-shadow: black 0.2em 0.2em 0.2em}
a:link, a:visited {color: inherit; text-decoration: underline}
a:hover {text-shadow: white 0 0 0.2em}

/* Vertical centering: make div as large as viewport and use table layout */
div.container {top: 0; left: 0; width: 100%; height: 100%;
  position: fixed; display: table}
p {display: table-cell; vertical-align: middle}

/* Horizontal centering of image: set left & right margins to 'auto' */
img.displayed {display: block; margin: 1em auto}

/* Also center the lines in the paragraph */
p {text-align: center}