.circle {
    border-radius: 50%;
    text-align: center;
	padding: 5px;
	margin-top: 70px;
	background: #89b;
	color: white;
}
.left {
	float: left;
	clear: left;
	margin: 5px 15px 5px 0px;
	font: 9pt Arial, sans-serif;
}
.right {
	float: right;
	clear: right;
	margin: 5px 0px 5px 10px;
	font: 9pt Arial, sans-serif;
}
.cool {
	color: white;
	background-color: #778;
	padding: 5px;
}
.clear_both {
	clear: both;
	font: 9pt Arial, sans-serif;
}
p.sansserif {
    font-family: Arial, Helvetica, sans-serif;
    font-size: 80%;
}
img {
	border-color: #2222ff;
	max-width: 100%;
}
hr {
	width: 30%;
	height: 2px;
	background: #11a;
}
body {
	font-size: 12pt;
	max-width: 700px;
	margin: 0px auto;
	padding: 25px 5%;
	background-color: #eeeeff;
	line-height: 1.35;
}
h1 {
	text-align: center;
}
h2 {
	clear: both;
}
h3 {
	clear: both;
}
div {
	max-width: 100%;
}
.chinese {
	font-family: "Microsoft Yahei", STXihei, sans-serif;
	line-height: 1.5;
	text-align:justify;
}
.cool div {
	max-width: 96%;
}
.subheading {
	text-align: center;
}
.picture {
	border: 2px solid #aaa;
	padding: 3px;
	font: 9pt Arial, sans-serif;
}
.picture img { 
	vertical-align:middle; 
	margin-bottom: 3px; 
	display: block;
}
.left div {
	background-color: #cce;
}
.right div {
	background-color: #cce;
}
.author {
	text-align: center;
	font-weight: bold;
}
.mobile {
	display: none;
}
.tabrow {
  text-align: center;
  list-style: none;
  margin: 0;
  padding: 0;
  line-height: 24px;
  position: relative;
}
.tabrow:before {
  z-index: 1;
}
.tabrow:after {
  position: absolute;
  content: "";
  width: 100%;
  bottom: 0;
  left: 0;
  border-bottom: 1px solid #AAA;
  z-index: 1;
}
.tabrow li {
  margin: 0 -3px;
  padding: 0 6px;
  border: 1px solid #AAA;
  background: #CCF;
  display: inline-block;
  position: relative;
  z-index: 0;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
}
.tabrow li:hover {
  background: var(--menu-hover-background);
  color: #33F;
}
.tabrow li a {
  text-decoration: none;
  color: black;
}
.tabrow li.selected {
  background: #EEF;
  z-index: 2;
  border-bottom-color: #EEF;
  color: black;
}
.videoWrapper {
    position: relative;
    width: 100%;
    padding-top: var(--height-ratio);
    clear: both;
}
.videoWrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
.videoWrapper div {
   position: absolute;
   top: 0;
   left: 0.1%;
   width: 99.6%;
   height: 99.5%;
   border: thin solid black;
   display: flex;			/* intended when shown */
   align-items: center;
   justify-content: center; /* align horizontal */
}
.aRatio {
	display: grid;
	position: relative;
}
.aRatio > * {
	grid-area: 1/1;
}
@media only screen and (max-device-width: 700px) {
	body {
		margin: 5px 5px;
		max-width: none;
		font-size: 120%;
	}
	.mobile {
		display: block;
	}
}