body {
	font-family:Arial, Helvetica, sans-serif;
}

header {
	min-height:150px;
	background-image: url("https://magisoft.co.uk/alan/misc/game/plain/plain-all.png");
 	background-size: 100px 100px;
 	background-repeat:no-repeat;
	height: 100px;
	padding-left: 170px;
}

header h1 {
	padding-top: 0.5em;
	margin-bottom: 0.2em;
}

header .author {
	font-size: 1.3em;
	margin:0;
}


.content {
    width:90%;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.center {
	marfin-left: auto;
	margin-right: auto;
}

.highlight-colour {
	color: #669966;
}

.clear {
	clear: both;
}

.toc li {
	list-style-type: none;
}

section.part {
	border-bottom: solid 2px #666;
	margin-bottom: 20px;
	padding-bottom: 20px;
	padding-top: 10px;
	background-color: #EEE;
	padding-left: 10px;
	padding-right: 10px;
	box-shadow: 5px 10px 8px #888888;
}

section.part h3 {
	/*padding-left: 10px;
	padding-right: 10px;*/
	font-size: 2em;
	padding-top: 0;
	margin-top: 10px;
}

section.part:nth-child(even) .description, section.part:nth-child(odd) .slides   {
	float: left;
}

section.part:nth-child(odd) .description, section.part:nth-child(even) .slides  {
	float: right;
}

section.part .description  {
	width: calc( 100% - 550px );
	min-width: 300px;
	background-color: white;
	padding: 5px 5px;
}

section.part .description p:first-child  {
	margin-top:0;
}

section.part .slides  {
	width: 520px;
	/*background-color: red;
	border: solid 2px black;*/
}

.jqPuzzle .jqp-piece {
	color: black;
}

.jqPuzzle .jqp-piece span {
	display: block;
  	position: absolute;
 	 top: 50%;
  	left: 50%;
  	transform: translate(-50%, -50%);
}