h1 {
	font-size: 18px;
	font-family: Microsoft JhengHei;
}

#content {
	position: relative;
	width: 100%;
	min-width: 1100px;
	max-width: 1100px;
	margin: auto;
	min-height: 100dvh;
}

.maintable {
	border-color: #EEE;
	border-width: 2px;
	border-style: outset;
	font-family: Microsoft JhengHei;
}

.teacher_img {
	height: 100px;
	width: 100px;
	-webkit-background-size: 100% 100%;
	-moz-background-size: 100% 100%;
	-o-background-size: 100% 100%;
	background-size: 100% 100%;
}

.id {
	/*background-image:url(../img/id.png);*/
	height: 20px;
	width: 20px;
	-webkit-background-size: 100% 100%;
	-moz-background-size: 100% 100%;
	-o-background-size: 100% 100%;
	background-size: 100% 100%;
}

.hat {
	/*background-image:url(../img/black.png);*/
	height: 20px;
	width: 20px;
	-webkit-background-size: 100% 100%;
	-moz-background-size: 100% 100%;
	-o-background-size: 100% 100%;
	background-size: 100% 100%;
}