body {
    margin: 0;
    padding: 0;
    text-align: center; /* !!! */
	background-color:rgb(180,180,180);
}

div.calendar_div {
	width: 98%;
	margin:1%;
}
table.calendar_div {
    text-align:center; 
    margin-left:auto; 
    margin-right:auto; 
    width:200px;
	border: 1px solid rgb(153,153,153);
}