style.css

* {
	margin: 0px;
	padding: 0px;
	-webkit-tap-highlight-color: rgba(0,0,0,0);
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
}


span {
    display: inline-block;
    vertical-align: middle;
    line-height: normal;   
	text-align: center;   
}

#container {
	width: 800px;
	display: block;
	margin-left: auto;
	margin-right: auto;
	vertical-align: middle;
	cursor: pointer;
}	


.squared {
    width: 155px;
    height: 155px;
    border: 1px solid black;
    text-align: center;
	float: left;
    vertical-align: middle; /* */
    line-height: 155px; /* */
	transition-property: background-color;
	transition-duration: 1s;
	-moz-transition-property: background-color;
	-moz-transition-duration: 1s;
	-webkit-transition-property: background-color;
	-webkit-transition-duration: 1s; 
}

.squared_hover:hover, .squared_hover:active {
    background-color: lightgray;
    -webkit-user-select: none; 
    -webkit-touch-callout: none
}

.selected {
	color: #f1f1f1;
	background-color: #38008C;
}

h1 {
    color: blue;
    font-weight: bold;
}

#header, #footer {
	display: block;
	float: left;
	width: 600px;
	/* color: blue; */
	opacity: 0.5;
	/* text-shadow: 0px 1px 0px #e1e1e1, 0px -1px 0px #313131; */
   	background-color: none;
	font-size: 1em;
	/* font-weight: bold; */
	padding: 8px 20px 8px 20px;
	transition-property: background-color;
	transition-duration: 1s;
	-moz-transition-property: background-color;
	-moz-transition-duration: 1s;
	-webkit-transition-property: background-color;
	-webkit-transition-duration: 1s;
}