/*#intro p{ text-align:justify;}*/

/* ---------- Examples -------------- */

#show1a .left{width:50%; text-align:center;}


/* ---------- Exercises ------------- */

.question input{width:3em;}


.type-ul{
	border:1px solid black; 
	border-collapse:collapse;
	display: inline-block;
    vertical-align: middle;
}
td.ul{border:1px solid black; width:2em; height:2em;}
td.uls{background-color:#b1b1b1;}

td.ul{padding:0; border-width:1px; display:table-cell; cursor:default;}
td.ul:hover{border-width:1px;border-color:black;}

td.ul{*display:block;}

.type-ul.w{background-color:transparent; border-color:red;}

#q1form .type-ul{margin-left:3em;}

#q2form .type-ul{margin-left:3em;}

#q3form .but{float:right;}
#q3form .fractioni{margin:2.7em;}


.ch{
	display:inline-block; 
	vertical-align:middle; 
	text-align:center; 
	border:1px solid #e4e4e4; 
	cursor:pointer;
	width:2em; 
	height:1.5em;
	line-height:1.5em;
	font-size:150%;
}
.type-ch{display: inline-block;}