code {
	//border-style: solid;
	//border-width: 1px;
	background-color: #D1EEEE
	
}
strong{
	font-weight: bold;
	//font-style: italic;
}

div.center-div{
    margin-left: auto;
    margin-right: auto;
}
img {
    margin-left: 50px;
    margin-right: 50px;
    vertical-align: middle;
}